4.4.0 (unreleased)

New Features

general support for all bourne- and c-based shells (#3175)

Deprecations/Breaking Changes

The default channel repo.continuum.io/pkgs/free is moved to repo.continuum.io/pkgs/anaconda (#4635)

Improvements

filter out unwritable package caches from conda clean command (#4620)

Non-User-Facing Changes

eliminate index modification in Resolve.init (#4333)

4.3.14 (2017-03-03)

Improvements

use cPickle in place of pickle for repodata (#4717)
ignore pyc compile failure (#4719)
use conda.exe for windows entry point executable (#4716, #4720)
localize use of conda_signal_handler (#4730)
add skip_safety_checks configuration parameter (#4767)
never symlink executables using ORIGIN (#4625)
set activate.bat codepage to CP_ACP (#4558)

Bug Fixes

fix #4777 package cache initialization speed (#4778)
fix #4703 menuinst PathNotFoundException (#4709)
ignore permissions error if user_site can't be read (#4710)
fix #4694 don't import requests directly in models (#4711)
fix #4715 include resources directory in recipe (#4716)
fix CondaHttpError for URLs that contain '%' (#4769)
bug fixes for preferred envs (#4678)
fix #4745 check for info/index.json with package is_extracted (#4776)
make sure url gets included in CondaHTTPError (#4779)
fix #4757 map-type configs set to None (#4774)
fix #4788 partial package extraction (#4789)

Non-User-Facing Changes

test coverage improvement (#4607)
CI configuration improvements (#4713, #4773, #4775)
allow sha256 to be None (#4759)
add cache_fn_url to exports (#4729)
add unicode paths for PY3 integration tests (#4760)
additional unit tests (#4728, #4783)
fix conda-build compatibility and tests (#4785)

4.3.13 (2017-02-17)

Improvements

resolve #4636 environment variable expansion for pkgs_dirs (#4637)
link, symlink, islink, and readlink for Windows (#4652, #4661)
add extra information to CondaHTTPError (#4638, #4672)

Bug Fixes

maximize requested builds after feature determination (#4647)
fix #4649 incorrect assert statement concerning package cache directory (#4651)
multi-user mode bug fixes (#4663)

Non-User-Facing Changes

path_actions unit tests (#4654)
remove dead code (#4369, #4655, #4660)
separate repodata logic from index into a new core/repodata.py module (#4669)

4.3.12 (2017-02-14)

Improvements

prepare conda for uploading to pypi (#4619)
better general http error message (#4627)
disable old python noarch warning (#4576)

Bug Fixes

fix UnicodeDecodeError for ensure_text_type (#4585)
fix determination of if file path is writable (#4604)
fix #4592 BufferError cannot close exported pointers exist (#4628)
fix run_script current working directory (#4629)
fix pkgs_dirs permissions regression (#4626)

Non-User-Facing Changes

fixes for tests when conda-bld directory doesn't exist (#4606)
use requirements.txt and Makefile for travis-ci setup (#4600, #4633)
remove hasattr use from compat functions (#4634)

4.3.11 (2017-02-09)

Bug Fixes

fix attribute error in add_defaults_to_specs (#4577)

4.3.10 (2017-02-07)

Improvements

remove .json from pickle path (#4498)
improve empty repodata noarch warning and error messages (#4499)
don't add python and lua as default specs for private envs (#4529, #4533)
let default_python be None (#4547, #4550)

Bug Fixes

fix #4513 null pointer exception for channel without noarch (#4518)
fix ssl_verify set type (#4517)
fix bug for windows multiuser (#4524)
fix clone with noarch python packages (#4535)
fix ipv6 for python 2.7 on Windows (#4554)

Non-User-Facing Changes

separate integration tests with a marker (#4532)

4.3.9 (2017-01-31)

Improvements

improve repodata caching for performance (#4478, #4488)
expand scope of packages included by bad_installed (#4402)
silence pre-link warning for old noarch (#4451)
add configuration to optionally require noarch repodata (#4450)
improve conda subprocessing (#4447)
respect info/link.json (#4482)

Bug Fixes

fix #4398 'hard' was used for link type at one point (#4409)
fixed "No matches for wildcard '$activate_d/*.fish'" warning (#4415)
print correct activate/deactivate message for fish shell (#4423)
fix 'Dist' object has no attribute 'fn' (#4424)
fix noarch generic and add additional integration test (#4431)
fix #4425 unknown encoding (#4433)

Non-User-Facing Changes

fail CI on conda-build fail (#4405)
run doctests (#4414)
make index record mutable again (#4461)
additional test for conda list --json (#4480)

4.3.8 (2017-01-23)

Bug Fixes

fix #4309 ignore EXDEV error for directory renames (#4392)
fix #4393 by force-renaming certain backup files if the path already exists (#4397)

4.3.7 (2017-01-20)

Bug Fixes

actually revert json output for leaky plan (#4383)
fix not raising on pre/post-link error (#4382)
fix find_commands and find_executable for symlinks (#4387)

4.3.6 (2017-01-18)

Bug Fixes

fix 'Uncaught backoff with errno 41' warning on windows (#4366)
revert json output for leaky plan (#4349)
audit os.environ setting (#4360)
fix #4324 using old dist string instead of dist object (#4361)
fix #4351 infinite recursion via code in #4120 (#4370)
fix #4368 conda -h (#4367)
workaround for symlink race conditions on activate (#4346)

4.3.5 (2017-01-17)

Improvements

add exception message for corrupt repodata (#4315)

Bug Fixes

fix package not being found in cache after download (#4297)
fix logic for Content-Length mismatch (#4311, #4326)
use unicode_escape after etag regex instead of utf-8 (#4325)
fix #4323 central condarc file being ignored (#4327)
fix #4316 a bug in deactivate (#4316)
pass target_prefix as env_prefix regardless of is_unlink (#4332)
pass positional argument 'context' to BasicClobberError (#4335)

Non-User-Facing Changes

additional package pinning tests (#4317)

4.3.4 (2017-01-13)

Improvements

vendor url parsing from urllib3 (#4289)

Bug Fixes

fix some bugs in windows multi-user support (#4277)
fix problems with channels of type (#4290)
include aliases for first command-line argument (#4279)
fix for multi-line FTP status codes (#4276)

Non-User-Facing Changes

make arch in IndexRecord a StringField instead of EnumField
improve conda-build compatibility (#4266)

4.3.3 (2017-01-10)

Improvements

respect Cache-Control max-age header for repodata (#4220)
add 'local_repodata_ttl' configurability (#4240)
remove questionable "nothing to install" logic (#4237)
relax channel noarch requirement for 4.3; warn now, raise in future feature release (#4238)
add additional info to setup.py warning message (#4258)

Bug Fixes

remove features properly (#4236)
do not use IFS to find activate/deactivate scripts to source (#4239)
fix #4235 print message to stderr (#4241)
fix relative path to python in activate.bat (#4242)
fix args.channel references (#4245, #4246)
ensure cache_fn_url right pad (#4255)
fix #4256 subprocess calls must have env wrapped in str (#4259)

4.3.2 (2017-01-06)

Deprecations/Breaking Changes

Further refine conda channels specification. To verify if the url of a channel represents a valid conda channel, we check that noarch/repodata.json and/or noarch/repodata.json.bz2 exist, even if empty. (#3739)

Improvements

add new 'path_conflict' and 'clobber' configuration options (#4119)
separate fetch/extract pass for explicit URLs (#4125)
update conda homepage to conda.io (#4180)

Bug Fixes

fix pre/post unlink/link scripts (#4113)
fix package version regex and bug in create_link (#4132)
fix history tracking (#4143)
fix index creation order (#4131)
fix #4152 conda env export failure (#4175)
fix #3779 channel UNC path encoding errors on windows (#4190)
fix progress bar (#4191)
use context.channels instead of args.channel (#4199)
don't use local cached repodata for file:// urls (#4209)

Non-User-Facing Changes

xfail anaconda token test if local token is found (#4124)
fix open-ended test failures relating to python 3.6 release (#4145)
extend timebomb for test_multi_channel_export (#4169)
don't unlink dists that aren't in the index (#4130)
add python 3.6 and new conda-build test targets (#4194)

4.3.1 (2016-12-19)

Improvements

additional pre-transaction validation (#4090)
export FileMode enum for conda-build (#4080)
memoize disk permissions tests (#4091)
local caching of repodata without remote server calls; new 'repodata_timeout_secs' configuration parameter (#4094)
performance tuning (#4104)
add additional fields to dist object serialization (#4102)

Bug Fixes

fix a noarch install bug on windows (#4071)
fix a spec mismatch that resulted in python versions getting mixed during packaging (#4079)
fix rollback linked record (#4092)
fix #4097 keep split in PREFIX_PLACEHOLDER (#4100)

4.3.0 (2016-12-14) Safety

New Features

Unlink and Link Packages in a Single Transaction: In the past, conda hasn't always been safe and defensive with its disk-mutating actions. It has gleefully clobbered existing files, and mid-operation failures leave environments completely broken. In some of the most severe examples, conda can appear to "uninstall itself." With this release, the unlinking and linking of packages for an executed command is done in a single transaction. If a failure occurs for any reason while conda is mutating files on disk, the environment will be returned its previous state. While we've implemented some pre-transaction checks (verifying package integrity for example), it's impossible to anticipate every failure mechanism. In some circumstances, OS file permissions cannot be fully known until an operation is attempted and fails. And conda itself is not without bugs. Moving forward, unforeseeable failures won't be catastrophic. (#3833, #4030)
Progressive Fetch and Extract Transactions: Like package unlinking and linking, the download and extract phases of package handling have also been given transaction-like behavior. The distinction is the rollback on error is limited to a single package. Rather than rolling back the download and extract operation for all packages, the single-package rollback prevents the need for having to re-download every package if an error is encountered. (#4021, #4030)
Generic- and Python-Type Noarch/Universal Packages: Along with conda-build 2.1.0, a noarch/universal type for python packages is officially supported. These are much like universal python wheels. Files in a python noarch package are linked into a prefix just like any other conda package, with the following additional features
1. conda maps the site-packages directory to the correct location for the python version in the environment,
2. conda maps the python-scripts directory to either $PREFIX/bin or $PREFIX/Scripts depending on platform,
3. conda creates the python entry points specified in the conda-build recipe, and
4. conda compiles pyc files at install time when prefix write permissions are guaranteed.
Python noarch packages must be "fully universal." They cannot have OS- or python version-specific dependencies. They cannot have OS- or python version-specific "scripts" files. If these features are needed, traditional conda packages must be used. (#3712)
Multi-User Package Caches: While the on-disk package cache structure has been preserved, the core logic implementing package cache handling has had a complete overhaul. Writable and read-only package caches are fully supported. (#4021)
Python API Module: An oft requested feature is the ability to use conda as a python library, obviating the need to "shell out" to another python process. Conda 4.3 includes a conda.cli.python_api module that facilitates this use case. While we maintain the user-facing command-line interface, conda commands can be executed in-process. There is also a conda.exports module to facilitate longer-term usage of conda as a library across conda conda releases. However, conda's python code is considered internal and private, subject to change at any time across releases. At the moment, conda will not install itself into environments other than its original install environment. (#4028)
Remove All Locks: Locking has never been fully effective in conda, and it often created a false sense of security. In this release, multi-user package cache support has been implemented for improved safety by hard-linking packages in read-only caches to the user's primary user package cache. Still, users are cautioned that undefined behavior can result when conda is running in multiple process and operating on the same package caches and/or environments. (#3862)

Deprecations/Breaking Changes

Conda will refuse to clobber existing files that are not within the unlink instructions of the transaction. At the risk of being user-hostile, it's a step forward for conda. We do anticipate some growing pains. For example, conda will not clobber packages that have been installed with pip (or any other package manager). In other instances, conda packages that contain overlapping file paths but are from different package families will not install at the same time. The --force command line flag is the escape hatch. Using --force will let your operation proceed, but also makes clear that you want conda to do something it considers unsafe.
Conda signed packages have been removed in 4.3. Vulnerabilities existed. An illusion of security is worse than not having the feature at all. We will be incorporating The Update Framework into conda in a future feature release. (#4064)
Conda 4.4 will drop support for older versions of conda-build.

Improvements

create a new "trace" log level enabled by -v -v -v or -vvv (#3833)
allow conda to be installed with pip, but only when used as a library/dependency (#4028)
the 'r' channel is now part of defaults (#3677)
private environment support for conda (#3988)
support v1 info/paths.json file (#3927, #3943)
support v1 info/package_metadata.json (#4030)
improved solver hint detection, simplified filtering (#3597)
cache VersionOrder objects to improve performance (#3596)
fix documentation and typos (#3526, #3572, #3627)
add multikey configuration validation (#3432)
some Fish autocompletions (#2519)
reduce priority for packages removed from the index (#3703)
add user-agent, uid, gid to conda info (#3671)
add conda.exports module (#3429)
make http timeouts configurable (#3832)
add a pkgs_dirs config parameter (#3691)
add an 'always_softlink' option (#3870, #3876)
pre-checks for diskspace, etc for fetch and extract #(4007)
address #3879 don't print activate message when quiet config is enabled (#3886)
add zos-z subdir (#4060)
add elapsed time to HTTP errors (#3942)

Bug Fixes

account for the Windows Python 2.7 os.environ unicode aversion (#3363)
fix link field in record object (#3424)
anaconda api token bug fix; additional tests (#3673)
fix #3667 unicode literals and unicode decode (#3682)
add conda-env entrypoint (#3743)
fix #3807 json dump on conda config --show --json (#3811)
fix #3801 location of temporary hard links of index.json (#3813)
fix invalid yml example (#3849)
add arm platforms back to subdirs (#3852)
fix #3771 better error message for assertion errors (#3802)
fix #3999 spaces in shebang replacement (#4008)
config --show-sources shouldn't show force by default (#3891)
fix #3881 don't install conda-env in clones of root (#3899)
conda-build dist compatibility (#3909)

Non-User-Facing Changes

remove unnecessary eval (#3428)
remove dead install_tar function (#3641)
apply PEP-8 to conda-env (#3653)
refactor dist into an object (#3616)
vendor appdirs; remove conda's dependency on anaconda-client import (#3675)
revert boto patch from #2380 (#3676)
move and update ROOT_NO_RM (#3697)
integration tests for conda clean (#3695, #3699)
disable coverage on s3 and ftp requests adapters (#3696, #3701)
github repo hygiene (#3705, #3706)
major install refactor (#3712)
remove test timebombs (#4012)
LinkType refactor (#3882)
move CrossPlatformStLink and make available as export (#3887)
make Record immutable (#3965)
project housekeeping (#3994, #4065)
context-dependent setup.py files (#4057)

4.2.17 (unreleased)

Improvements

silence pre-link warning for old noarch 4.2.x backport (#4453)

Non-User-Facing Changes

build 4.2.x against conda-build 2.1.2 and enforce passing (#4462)

4.2.16 (2017-01-20)

Improvements

vendor url parsing from urllib3 (#4289)
workaround for symlink race conditions on activate (#4346)

Bug Fixes

do not replace \ with / in file:// URLs on Windows (#4269)
include aliases for first command-line argument (#4279)
fix for multi-line FTP status codes (#4276)
fix errors with unknown type channels (#4291)
change sys.exit to raise UpgradeError when info/files not found (#4388)

Non-User-Facing Changes

start using doctests in test runs and coverage (#4304)
additional package pinning tests (#4312)

4.2.15 (2017-01-10)

Improvements

use 'post' instead of 'dev' for commits according to PEP-440 (#4234)
do not use IFS to find activate/deactivate scripts to source (#4243)
fix relative path to python in activate.bat (#4244)

Bug Fixes

replace sed with python for activate and deactivate #4257

4.2.14 (2017-01-07)

Improvements

use install.rm_rf for TemporaryDirectory cleanup (#3425)
improve handling of local dependency information (#2107)
add default channels to exports for Windows and Unix (#4103)
make subdir configurable (#4178)

Bug Fixes

fix conda/install.py single-file behavior (#3854)
fix the api->conda substitution (#3456)
fix silent directory removal (#3730)
fix location of temporary hard links of index.json (#3975)
fix potential errors in multi-channel export and offline clone (#3995)
fix auxlib/packaging, git hashes are not limited to 7 characters (#4189)
fix compatibility with requests >=2.12, add pyopenssl as dependency (#4059)
fix #3287 activate in 4.1-4.2.3 clobbers non-conda PATH changes (#4211)

Non-User-Facing Changes

fix open-ended test failures relating to python 3.6 release (#4166)
allow args passed to cli.main() (#4193, #4200, #4201)
test against python 3.6 (#4197)

4.2.13 (2016-11-22)

Deprecations/Breaking Changes

show warning message for pre-link scripts (#3727)
error and exit for install of packages that require conda minimum version 4.3 (#3726)

Improvements

double/extend http timeouts (#3831)
let descriptive http errors cover more http exceptions (#3834)
backport some conda-build configuration (#3875)

Bug Fixes

fix conda/install.py single-file behavior (#3854)
fix the api->conda substitution (#3456)
fix silent directory removal (#3730)
fix #3910 null check for is_url (#3931)

Non-User-Facing Changes

flake8 E116, E121, & E123 enabled (#3883)

4.2.12 (2016-11-02)

Bug Fixes

fix #3732, #3471, #3744 CONDA_BLD_PATH (#3747)
fix #3717 allow no-name channels (#3748)
fix #3738 move conda-env to ruamel_yaml (#3740)
fix conda-env entry point (#3745 via #3743)
fix again #3664 trash emptying (#3746)

4.2.11 (2016-10-23)

Improvements

only try once for windows trash removal (#3698)

Bug Fixes

fix anaconda api token bug (#3674)
fix #3646 FileMode enum comparison (#3683)
fix #3517 conda install --mkdir (#3684)
fix #3560 hack anaconda token coverup on conda info (#3686)
fix #3469 alias envs_path to envs_dirs (#3685)

4.2.10 (2016-10-18)

Improvements

add json output for conda info -s (#3588)
ignore certain binary prefixes on windows (#3539)
allow conda config files to have .yaml extensions or 'condarc' anywhere in filename (#3633)

Bug Fixes

fix conda-build's handle_proxy_407 import (#3666)
fix #3442, #3459, #3481, #3531, #3548 multiple networking and auth issues (#3550)
add back linux-ppc64le subdir support (#3584)
fix #3600 ensure links are removed when unlinking (#3625)
fix #3602 search channels by platform (#3629)
fix duplicated packages when updating environment (#3563)
fix #3590 exception when parsing invalid yaml (#3593 via #3634)
fix #3655 a string decoding error (#3656)

Non-User-Facing Changes

backport conda.exports module to 4.2.x (#3654)
travis-ci OSX fix (#3615 via #3657)

4.2.9 (2016-09-27)

Bug Fixes

fix #3536 conda-env messaging to stdout with --json flag (#3537)
fix #3525 writing to sys.stdout with --json flag for post-link scripts (#3538)
fix #3492 make NULL falsey with python 3 (#3524)

4.2.8 (2016-09-26)

Improvements

add "error" key back to json error output (#3523)

Bug Fixes

fix #3453 conda fails with create_default_packages (#3454)
fix #3455 --dry-run fails (#3457)
dial down error messages for rm_rf (#3522)
fix #3467 AttributeError encountered for map config parameter validation (#3521)

4.2.7 (2016-09-16)

Deprecations/Breaking Changes

revert to 4.1.x behavior of conda list --export (#3450, #3451)

Bug Fixes

don't add binstar token if it's given in the channel spec (#3427, #3440, #3444)
fix #3433 failure to remove broken symlinks (#3436)

Non-User-Facing Changes

use install.rm_rf for TemporaryDirectory cleanup (#3425)

4.2.6 (2016-09-14)

Improvements

add support for client TLS certificates (#3419)
address #3267 allow migration of channel_alias (#3410)
conda-env version matches conda version (#3422)

Bug Fixes

fix #3409 unsatisfiable dependency error message (#3412)
fix #3408 quiet rm_rf (#3413)
fix #3407 padding error messaging (#3416)
account for the Windows Python 2.7 os.environ unicode aversion (#3363 via #3420)

4.2.5 (2016-09-08)

Deprecations/Breaking Changes

partially revert #3041 giving conda config --add previous --prepend behavior (#3364 via #3370)
partially revert #2760 adding back conda package command (#3398)

Improvements

order output of conda config --show; make --json friendly (#3384 via #3386)
clean the pid based lock on exception (#3325)
improve file removal on all platforms (#3280 via #3396)

Bug Fixes

fix #3332 allow download urls with :: in them (#3335)
fix always_yes and not-set argparse args overriding other sources (#3374)
fix ftp fetch timeout (#3392)
fix #3307 add try/except block for touch lock (#3326)
fix CONDA_CHANNELS environment variable splitting (#3390)
fix #3378 CONDA_FORCE_32BIT environment variable (#3391)
make conda info channel urls actually give urls (#3397)
fix cio_test compatibility (#3395 via #3400)

4.2.4 (2016-08-18)

Bug Fixes

fix #3277 conda list package order (#3278)
fix channel priority issue with duplicated channels (#3283)
fix local channel channels; add full conda-build unit tests (#3281)
fix conda install with no package specified (#3284)
fix #3253 exporting and importing conda environments (#3286)
fix priority messaging on conda config --get (#3304)
fix conda list --export; additional integration tests (#3291)
fix conda update --all idempotence; add integration tests for channel priority (#3306)

Non-User-Facing Changes

additional conda-env integration tests (#3288)

4.2.3 (2016-08-11)

Improvements

added zsh and zsh.exe to Windows shells (#3257)

Bug Fixes

allow conda to downgrade itself (#3273)
fix breaking changes to conda-build from 4.2.2 (#3265)
fix empty environment issues with conda and conda-env (#3269)

Non-User-Facing Changes

add integration tests for conda-env (#3270)
add more conda-build smoke tests (#3274)

4.2.2 (2016-08-09)

Improvements

enable binary prefix replacement on windows (#3262)
add --verbose command line flag (#3237)
improve logging and exception detail (#3237, #3252)
do not remove empty environment without asking; raise an error when a named environment can't be found (#3222)

Bug Fixes

fix #3226 user condarc not available on Windows (#3228)
fix some bugs in conda config --show* (#3212)
fix conda-build local channel bug (#3202)
remove subprocess exiting message (#3245)
fix comment parsing and channels in conda-env environment.yml (#3258, #3259)
fix context error with conda-env (#3232)
fix #3182 conda install silently skipping failed linking (#3184)

4.2.1 (2016-08-01)

Improvements

improve an error message that can happen during conda install --revision (#3181)
use clean sys.exit with user choice 'No' (#3196)

Bug Fixes

critical fix for 4.2.0 error when no git is on PATH (#3193)
revert #3171 lock cleaning on exit pending further refinement
patches for conda-build compatibility with 4.2 (#3187)
fix a bug in --show-sources output that ignored aliased parameter names (#3189)

Non-User-Facing Changes

move scripts in bin to shell directory (#3186)

4.2.0 (2016-07-28) Configuration

New Features

New Configuration Engine: Configuration and "operating context" are the foundation of conda's functionality. Conda now has the ability to pull configuration information from a multitude of on-disk locations, including .d directories and a .condarc file within a conda environment), along with full CONDA_ environment variable support. Helpful validation errors are given for improperly-specified configuration. Full documentation updates pending. (#2537, #3160, #3178)
New Exception Handling Engine: Previous releases followed a pattern of premature exiting (with hard calls to sys.exit() when exceptional circumstances were encountered. This release replaces over 100 sys.exit calls with python exceptions. For conda developers, this will result in tests that are easier to write. For developers using conda, this is a first step on a long path toward conda being directly importable. For conda users, this will eventually result in more helpful and descriptive errors messages. (#2899, #2993, #3016, #3152, #3045)
Empty Environments: Conda can now create "empty" environments when no initial packages are specified, alleviating a common source of confusion. (#3072, #3174)
Conda in Private Env: Conda can now be configured to live within its own private environment. While it's not yet default behavior, this represents a first step toward separating the root environment into a "conda private" environment and a "user default" environment. (#3068)
Regex Version Specification: Regular expressions are now valid version specifiers. For example, ^1\.[5-8]\.1$|2.2. (#2933)

Deprecations/Breaking Changes

remove conda init (#2759)
remove conda package and conda bundle (#2760)
deprecate conda-env repo; pull into conda proper (#2950, #2952, #2954, #3157, #3163, #3170)
force use of ruamel_yaml (#2762)
implement conda config --prepend; change behavior of --add to --append (#3041)
exit on link error instead of logging it (#2639)

Improvements

improve locking (#2962, #2989, #3048, #3075)
clean up requests usage for fetching packages (#2755)
remove excess output from conda --help (#2872)
remove os.remove in update_prefix (#3006)
better error behavior if conda is spec'd for a non-root environment (#2956)
scale back try_write function on unix (#3076)

Bug Fixes

remove psutil requirement, fixes annoying error message (#3135, #3183)
fix #3124 add threading lock to memoize (#3134)
fix a failure with multi-threaded repodata downloads (#3078)
fix windows file url (#3139)
address #2800, error with environment.yml and non-default channels (#3164)

Non-User-Facing Changes

project structure enhancement (#2929, #3132, #3133, #3136)
clean up channel handling with new channel model (#3130, #3151)
add Anaconda Cloud / Binstar auth handler (#3142)
remove dead code (#2761, #2969)
code refactoring and additional tests (#3052, #3020)
remove auxlib from project root (#2931)
vendor auxlib 0.0.40 (#2932, #2943, #3131)
vendor toolz 0.8.0 (#2994)
move progressbar to vendor directory (#2951)
fix conda.recipe for new quirks with conda-build (#2959)
move captured function to common module (#3083)
rename CHANGELOG to md (#3087)

4.1.13 (unreleased)

improve handling of local dependency information, #2107
show warning message for pre-link scripts, #3727
error and exit for install of packages that require conda minimum version 4.3, #3726
fix conda/install.py single-file behavior, #3854
fix open-ended test failures relating to python 3.6 release, #4167
fix #3287 activate in 4.1-4.2.3 clobbers non-conda PATH changes, #4211
fix relative path to python in activate.bat, #4244

4.1.12 (2016-09-08)

fix #2837 "File exists" in symlinked path with parallel activations, #3210
fix prune option when installing packages, #3354
change check for placeholder to be more friendly to long PATH, #3349

4.1.11 (2016-07-26)

fix PS1 backup in activate script, #3135 via #3155
correct resolution for 'handle failures in binstar_client more generally', #3156

4.1.10 (2016-07-25)

ignore symlink failure because of read-only file system, #3055
backport shortcut tests, #3064
fix #2979 redefinition of $SHELL variable, #3081
fix #3060 --clone root --copy exception, #3080

4.1.9 (2016-07-20)

fix #3104, add global BINSTAR_TOKEN_PAT
handle failures in binstar_client more generally

4.1.8 (2016-07-12)

fix #3004 UNAUTHORIZED for url (null binstar token), #3008
fix overwrite existing redirect shortcuts when symlinking envs, #3025
partially revert no default shortcuts, #3032, #3047

4.0.11 2016-07-09

allow auto_update_conda from sysrc, #3015 via #3021

4.1.7 (2016-07-07)

add msys2 channel to defaults on Windows, #2999
fix #2939 channel_alias issues; improve offline enforcement, #2964
fix #2970, #2974 improve handling of file:// URLs inside channel, #2976

4.1.6 (2016-07-01)

slow down exp backoff from 1 ms to 100 ms factor, #2944
set max time on exp_backoff to ~6.5 sec,#2955
fix #2914 add/subtract from PATH; kill folder output text, #2917
normalize use of get_index behavior across clone/explicit, #2937
wrap root prefix check with normcase, #2938

4.1.5 (2016-06-29)

more conservative auto updates of conda #2900
fix some permissions errors with more aggressive use of move_path_to_trash, #2882
fix #2891 error if allow_other_channels setting is used, #2896
fix #2886, #2907 installing a tarball directly from the package cache, #2908
fix #2681, #2778 reverting #2320 lock behavior changes, #2915

4.0.10 (2016-06-29)

fix #2846 revert the use of UNC paths; shorten trash filenames, #2859 via #2878
fix some permissions errors with more aggressive use of move_path_to_trash, #2882 via #2894

4.1.4 (2016-06-27)

fix #2846 revert the use of UNC paths; shorten trash filenames, #2859
fix exp backoff on Windows, #2860
fix #2845 URL for local file repos, #2862
fix #2764 restore full path var on win; create to CONDA_PREFIX env var, #2848
fix #2754 improve listing pip installed packages, #2873
change root prefix detection to avoid clobbering root activate scripts, #2880
address #2841 add lowest and highest priority indication to channel config output, #2875
add SYMLINK_CONDA to planned instructions, #2861
use CONDA_PREFIX, not CONDA_DEFAULT_ENV for activate.d, #2856
call scripts with redirect on win; more error checking to activate, #2852

4.1.3 (2016-06-23)

ensure conda-env auto update, along with conda, #2772
make yaml booleans behave how everyone expects them to, #2784
use accept-encoding for repodata; prefer repodata.json to repodata.json.bz2, #2821
additional integration and regression tests, #2757, #2774, #2787
add offline mode to printed info; use offline flag when grabbing channels, #2813
show conda-env version in conda info, #2819
adjust channel priority superseded list, #2820
support epoch ! characters in command line specs, #2832
accept old default names and new ones when canonicalizing channel URLs #2839
push PATH, PS1 manipulation into shell scripts, #2796
fix #2765 broken source activate without arguments, #2806
fix standalone execution of install.py, #2756
fix #2810 activating conda environment broken with git bash on Windows, #2795
fix #2805, #2781 handle both file-based channels and explicit file-based URLs, #2812
fix #2746 conda create --clone of root, #2838
fix #2668, #2699 shell recursion with activate #2831

4.1.2 (2016-06-17)

improve messaging for "downgrades" due to channel priority, #2718
support conda config channel append/prepend, handle duplicates, #2730
remove --shortcuts option to internal CLI code, #2723
fix an issue concerning space characters in paths in activate.bat, #2740
fix #2732 restore yes/no/on/off for booleans on the command line, #2734
fix #2642 tarball install on Windows, #2729
fix #2687, #2697 WindowsError when creating environments on Windows, #2717
fix #2710 link instruction in conda create causes TypeError, #2715
revert #2514, #2695, disabling of .netrc files, #2736
revert #2281 printing progress bar to terminal, #2707

4.1.1 (2016-06-16)

add auto_update_conda config parameter, #2686
fix #2669 conda config --add channels can leave out defaults, #2670
fix #2703 ignore activate symlink error if links already exist, #2705
fix #2693 install duplicate packages with older version of Anaconda, #2701
fix #2677 respect HTTP_PROXY, #2695
fix #2680 broken fish integration, #2685, #2694
fix an issue with conda never exiting, #2689
fix #2688 explicit file installs, #2708
fix #2700 conda list UnicodeDecodeError, #2706

4.0.9 (2016-06-15)

add auto_update_conda config parameter, #2686

4.1.0 (2016-06-14) Channel Priority

clean up activate and deactivate scripts, moving back to conda repo, #1727, #2265, #2291, #2473, #2501, #2484
replace pyyaml with ruamel_yaml, #2283, #2321
better handling of channel collisions, #2323, #2369 #2402, #2428
improve listing of pip packages with conda list, #2275
re-license progressbar under BSD 3-clause, #2334
reduce the amount of extraneous info in hints, #2261
add --shortcuts option to install shortcuts on windows, #2623
skip binary replacement on windows, #2630
don't show channel urls by default in conda list, #2282
package resolution and solver tweaks, #2443, #2475, #2480
improved version & build matching, #2442, #2488
print progress to the terminal rather than stdout, #2281
verify version specs given on command line are valid, #2246
fix for try_write function in case of odd permissions, #2301
fix a conda search --spec error, #2343
update User-Agent for conda connections, #2347
remove some dead code paths, #2338, #2374
fixes a thread safety issue with http requests, #2377, #2383
manage BeeGFS hard-links non-POSIX configuration, #2355
prevent version downgrades during removes, #2394
fix conda info --json, #2445
truncate shebangs over 127 characters using /usr/bin/env, #2479
extract packages to a temporary directory then rename, #2425, #2483
fix help in install, #2460
fix re-install bug when sha1 differs, #2507
fix a bug with file deletion, #2499
disable .netrc files, #2514
dont fetch index on remove --all, #2553
allow track_features to be a string or a list in .condarc, #2541
fix #2415 infinite recursion in invalid_chains, #2566
allow channel_alias to be different than binstar, #2564

4.0.8 (2016-06-03)

fix a potential problem with moving files to trash, #2587

4.0.7 (2016-05-26)

workaround for boto bug, #2380

4.0.6 (2016-05-11)

log "custom" versions as updates rather than downgrades, #2290
fixes a TypeError exception that can occur on install/update, #2331
fixes an error on Windows removing files with long path names, #2452

4.0.5 (2016-03-16)

improved help documentation for install, update, and remove, #2262
fixes #2229 and #2250 related to conda update errors on Windows, #2251
fixes #2258 conda list for pip packages on Windows, #2264

4.0.4 (2016-03-10)

revert #2217 closing request sessions, #2233

4.0.3 (2016-03-10)

adds a conda clean --all feature, #2211
solver performance improvements, #2209
fixes conda list for pip packages on windows, #2216
quiets some logging for package downloads under python 3, #2217
more urls for conda list --explicit, #1855
prefer more "latest builds" for more packages, #2227
fixes a bug with dependency resolution and features, #2226

4.0.2 (2016-03-08)

fixes track_features in ~/.condarc being a list, see also #2203
fixes incorrect path in lock file error #2195
fixes issues with cloning environments, #2193, #2194
fixes a strange interaction between features and versions, #2206
fixes a bug in low-level SAT clause generation creating a preference for older versions, #2199

4.0.1 (2016-03-07)

fixes an install issue caused by md5 checksum mismatches, #2183
remove auxlib build dependency, #2188

4.0.0 (2016-03-04) Solver

The solver has been retooled significantly. Performance should be improved in most circumstances, and a number of issues involving feature conflicts should be resolved.
conda update <package> now handles depedencies properly according to the setting of the "update_deps" configuration: --update-deps: conda will also update any dependencies as needed to install the latest verison of the requrested packages. The minimal set of changes required to achieve this is sought. --no-update-deps: conda will update the packages only to the extent that no updates to the dependencies are required The previous behavior, which would update the packages without regard to their dependencies, could result in a broken configuration, and has been removed.
Conda finally has an official logo.
Fix conda clean --packages on Windows, #1944
Conda sub-commands now support dashes in names, #1840

3.19.4 (unreleased):

improve handling of local dependency information, #2107
use install.rm_rf for TemporaryDirectory cleanup, #3425
fix the api->conda substitution, #3456
error and exit for install of packages that require conda minimum version 4.3, #3726
show warning message for pre-link scripts, #3727
fix silent directory removal, #3730
fix conda/install.py single-file behavior, #3854

2016-02-19 3.19.3:

fix critical issue, see #2106

2016-02-19 3.19.2:

add basic activate/deactivate, conda activate/deactivate/ls for fish, see #545
remove error when CONDA_FORCE_32BIT is set on 32-bit systems, #1985
suppress help text for --unknown option, #2051
fix issue with conda create --clone post-link scripts, #2007
fix a permissions issue on windows, #2083

2016-02-01 3.19.1:

resolve.py: properly escape periods in version numbers, #1926
support for pinning Lua by default, #1934
remove hard-coded test URLs, a module cio_test is now expected when CIO_TEST is set

2015-12-17 3.19.0:

OpenBSD 5.x support, #1891
improve install CLI to make Miniconda -f work, #1905

2015-12-10 3.18.9:

allow chaning default_channels (only applies to "system" condarc), from from CLI, #1886
improve default for --show-channel-urls in conda list, #1900

2015-12-03 3.18.8:

always attempt to delete files in rm_rf, #1864

2015-12-02 3.18.7:

simplify call to menuinst.install()
add menuinst as dependency on Windows
add ROOT_PREFIX to post-link (and pre_unlink) environment

2015-11-19 3.18.6:

improve conda clean when user lacks permissions, #1807
make show_channel_urls default to True, #1771
cleaner write tests, #1735
fix documentation, #1709
improve conda clean when directories don't exist, #1808

2015-11-11 3.18.5:

fix bad menuinst exception handling, #1798
add workaround for unresolved dependencies on Windows

2015-11-09 3.18.4:

allow explicit file to contain MD5 hashsums
add --md5 option to "conda list --explicit"
stop infinite recursion during certain resolve operations, #1749
add dependencies even if strictness == 3, #1766

2015-10-15 3.18.3:

added a pruning step for more efficient solves, #1702
disallow conda-env to be installed into non-root environment
improve error output for bad command input, #1706
pass env name and setup cmd to menuinst, #1699

2015-10-12 3.18.2:

add "conda list --explicit" which contains the URLs of all conda packages to be installed, and can used with the install/create --file option, #1688
fix a potential issue in conda clean
avoid issues with LookupErrors when updating Python in the root environment on Windows
don't fetch the index from the network with conda remove
when installing conda packages directly, "conda install .tar.bz2", unlink any installed package with that name (not just the installed one)
allow menu items to be installed in non-root env, #1692

2015-09-28 3.18.1:

fix: removed reference to win_ignore_root in plan module

2015-09-28 3.18.0:

allow Python to be updated in root environment on Windows, #1657
add defaults to specs after getting pinned specs (allows to pin a different version of Python than what is installed)
show what older versions are in the solutions in the resolve debug log
fix some issues with Python 3.5
respect --no-deps when installing from .tar or .tar.bz2
avoid infinite recursion with NoPackagesFound and conda update --all --file
fix conda update --file
toposort: Added special case to remove 'pip' dependency from 'python'
show dotlog messages during hint generation with --debug
disable the max_only heuristic during hint generation
new version comparison algorithm, which consistently compares any version string, and better handles version strings using things like alpha, beta, rc, post, and dev. This should remove any inconsistent version comparison that would lead to conda installing an incorrect version.
use the trash in rm_rf, meaning more things will get the benefit of the trash system on Windows
add the ability to pass the --file argument multiple times
add conda upgrade alias for conda update
add update_dependencies condarc option and --update-deps/--no-update-deps command line flags
allow specs with conda update --all
add --show-channel-urls and --no-show-channel-urls command line options
add always_copy condarc option
conda clean properly handles multiple envs directories. This breaks backwards compatibility with some of the --json output. Some of the old --json keys are kept for backwards compatibility.

2015-09-11 3.17.0:

add windows_forward_slashes option to walk_prefix(), see #1513
add ability to set CONDA_FORCE_32BIT environment variable, it should should only be used when running conda-build, #1555
add config option to makes the python dependency on pip optional, #1577
fix an UnboundLocalError
print note about pinned specs in no packages found error
allow wildcards in AND-connected version specs
print pinned specs to the debug log
fix conda create --clone with create_default_packages
give a better error when a proxy isn't found for a given scheme
enable running 'conda run' in offline mode
fix issue where hardlinked cache contents were being overwritten
correctly skip packages whose dependencies can't be found with conda update --all
use clearer terminology in -m help text.
use splitlines to break up multiple lines throughout the codebase
fix AttributeError with SSLError

2015-08-10 3.16.0:

rename binstar -> anaconda, see #1458
fix --use-local when the conda-bld directory doesn't exist
fixed --offline option when using "conda create --clone", see #1487
don't mask recursion depth errors
add conda search --reverse-dependency
check whether hardlinking is available before linking when using "python install.py --link" directly, see #1490
don't exit nonzero when installing a package with no dependencies
check which features are installed in an environment via track_features, not features
set the verify flag directly on CondaSession (fixes conda skeleton not respecting the ssl_verify option)

2015-07-23 3.15.1:

fix conda with older versions of argcomplete
restore the --force-pscheck option as a no-op for backwards compatibility

2015-07-22 3.15.0:

sort the output of conda info package correctly
enable tab completion of conda command extensions using argcomplete. Command extensions that import conda should use conda.cli.conda_argparse.ArgumentParser instead of argparse.ArgumentParser. Otherwise, they should enable argcomplete completion manually.
allow psutil and pycosat to be updated in the root environment on Windows
remove all mentions of pscheck. The --force-pscheck flag has been removed.
added support for S3 channels
fix color issues from pip in conda list on Windows
add support for other machine types on Linux, in particular ppc64le
add non_x86_linux_machines set to config module
allow ssl_verify to accept strings in addition to boolean values in condarc
enable --set to work with both boolean and string values

2015-06-29 3.14.1:

make use of Crypto.Signature.PKCS1_PSS module, see #1388
note when features are being used in the unsatisfiable hint

2015-06-16 3.14.0:

add ability to verify signed packages, see #1343 (and conda-build #430)
fix issue when trying to add 'pip' dependency to old python packages
provide option "conda info --unsafe-channels" for getting unobscured channel list, #1374

2015-06-04 3.13.0:

avoid the Windows file lock by moving files to a trash directory, #1133
handle env dirs not existing in the Environments completer
rename binstar.org -> anaconda.org, see #1348
speed up 'source activate' by ~40%

2015-05-05 3.12.0:

correctly allow conda to update itself
print which file leads to the "unable to remove file" error on Windows
add support for the no_proxy environment variable, #1171
add a much faster hint generation for unsatisfiable packages, which is now always enabled (previously it would not run if there were more than ten specs). The new hint only gives one set of conflicting packages, rather than all sets, so multiple passes may be necessary to fix such issues
conda extensions that import conda should use conda.cli.conda_argparser.ArgumentParser instead of argparse.ArgumentParser to conform to the conda help guidelines (e.g., all help messages should be capitalized with periods, and the options should be preceded by "Options:" for the sake of help2man).
add confirmation dialog to conda remove. Fixes conda remove --dry-run.

2015-04-22 3.11.0:

fix issue where forced update on Windows could cause a package to break
remove detection of running processes that might conflict
deprecate --force-pscheck (now a no-op argument)
make conda search --outdated --names-only work, fixes #1252
handle the history file not having read or write permissions better
make multiple package resolutions warning easier to read
add --full-name to conda list
improvements to command help

2015-04-06 3.10.1:

fix logic in @memoized for unhashable args
restored json cache of repodata, see #1249
hide binstar tokens in conda info --json
handle CIO_TEST='2 '
always find the solution with minimal number of packages, even if there are many solutions
allow comments at the end of the line in requirement files
don't update the progressbar until after the item is finished running
add conda/ to HTTP header User-Agent string

2015-03-12 3.10.0:

change default repo urls to be https
add --offline to conda search
add --names-only and --full-name to conda search
add tab completion for packages to conda search

2015-02-24 3.9.1:

pscheck: check for processes in the current environment, see #1157
don't write to the history file if nothing has changed, see #1148
conda update --all installs packages without version restrictions (except for Python), see #1138
conda update --all ignores the anaconda metapackage, see #1138
use forward slashes for file urls on Windows
don't symlink conda in the root environment from activate
use the correct package name in the progress bar info
use json progress bars for unsatisfiable dependencies hints
don't let requests decode gz files when downloaded

2015-02-16 3.9.0:

remove (de)activation scripts from conda, those are now in conda-env
pip is now always added as a Python dependency
allow conda to be installed into environments which start with _
add argcomplete tab completion for environments with the -n flag, and for package names with install, update, create, and remove

2015-02-03 3.8.4:

copy (de)activate scripts from conda-env
Add noarch (sub) directory support

2015-01-28 3.8.3:

simplified how ROOT_PREFIX is obtained in (de)activate

2015-01-27 3.8.2:

add conda clean --source-cache to clean the conda build source caches
add missing quotes in (de)activate.bat, fixes problem in Windows when conda is installed into a directory with spaces
fix conda install --copy

2015-01-23 3.8.1:

add missing utf-8 decoding, fixes Python 3 bug when icondata to json file

2015-01-22 3.8.0:

move active script into conda-env, which is now a new dependency
load the channel urls in the correct order when using concurrent.futures
add optional 'icondata' key to json files in conda-meta directory, which contain the base64 encoded png file or the icon
remove a debug print statement

2014-12-18 3.7.4:

add --offline option to install, create, update and remove commands, and also add ability to set "offline: True" in condarc file
add conda uninstall as alias for conda remove
add conda info --root
add conda.pip module
fix CONDARC pointing to non-existing file, closes issue #961
make update -f work if the package is already up-to-date
fix possible TypeError when printing an error message
link packages in topologically sorted order (so that pre-link scripts can assume that the dependencies are installed)
add --copy flag to install
prevent the progressbar from crashing conda when fetching in some situations

2014-11-05 3.7.3:

conda install from a local conda package (or a tar fill which contains conda packages), will now also install the dependencies listed by the installed packages.
add SOURCE_DIR environment variable in pre-link subprocess
record all created environments in ~/.conda/environments.txt

2014-10-31 3.7.2:

only show the binstar install message once
print the fetching repodata dot after the repodata is fetched
write the install and remove specs to the history file
add '-y' as an alias to '--yes'
the --file option to conda config now defaults to os.environ.get('CONDARC')
some improvements to documentation (--help output)
add user_rc_path and sys_rc_path to conda info --json
cache the proxy username and password
avoid warning about conda in pscheck
make ~/.conda/envs the first user envs dir

2014-10-07 3.7.1:

improve error message for forgetting to use source with activate and deactivate, see issue #601
don't allow to remove the current environment, see issue #639
don't fail if binstar_client can't be imported for other reasons, see issue #925
allow spaces to be contained in conda run
only show the conda install binstar hint if binstar is not installed
conda info package_spec now gives detailed info on packages. conda info path has been removed, as it is duplicated by conda package -w path.

2014-09-19 3.7.0:

faster algorithm for --alt-hint
don't allow channel_alias with allow_other_channels: false if it is set in the system .condarc
don't show long "no packages found" error with update --all
automatically add the Binstar token to urls when the binstar client is installed and logged in
carefully avoid showing the binstar token or writing it to a file
be more careful in conda config about keys that are the wrong type
don't expect directories starting with conda- to be commands
no longer recommend to run conda init after pip installing conda. A pip installed conda will now work without being initialized to create and manage other environments
the rm function on Windows now works around access denied errors
fix channel urls now showing with conda list with show_channel_urls set to true

2014-09-08 3.6.4:

fix removing packages that aren't in the channels any more
Pretties output for --alt-hint

2014-09-04 3.6.3:

skip packages that can't be found with update --all
add --use-local to search and remove
allow --use-local to be used along with -c (--channels) and --override-channels. --override-channels now requires either -c or --use-local
allow paths in has_prefix to be quoted, to allow for spaces in paths on Windows
retain Unix style path separators for prefixes in has_prefix on Windows (if the placeholder path uses /, replace it with a path that uses /, not )
fix bug in --use-local due to API changes in conda-build
include user site directories in conda info -s
make binary has_prefix replacement work with spaces after the prefix
make binary has_prefix replacement replace multiple occurrences of the placeholder in the same null-terminated string
don't show packages from other platforms as installed or cached in conda search
be more careful about not warning about conda itself in pscheck
Use a progress bar for the unsatisfiable packages hint generation
Don't use TemporaryFile in try_write, as it is too slow when it fails
Ignore InsecureRequestWarning when ssl_verify is False
conda remove removes features tracked by removed packages in track_features

2014-08-20 3.6.2:

add --use-index-cache to conda remove
fix a bug where features (like mkl) would be selected incorrectly
use concurrent.future.ThreadPool to fetch package metadata asynchronously in Python 3.
do the retries in rm_rf on every platform
use a higher cutoff for package name misspellings
allow changing default channels in "system" .condarc

2014-08-13 3.6.1:

add retries to download in fetch module
improved error messages for missing packages
more robust rm_rf on Windows
print multiline help for subcommands correctly

2014-08-11 3.6.0:

correctly check if a package can be hard-linked if it isn't extracted yet
change how the package plan is printed to better show what is new, updated, and downgraded
use suggest_normalized_version in the resolve module. Now versions like 1.0alpha that are not directly recognized by verlib's NormalizedVersion are supported better
conda run command, to run apps and commands from packages
more complete --json API. Every conda command should fully support --json output now.
show the conda_build and requests versions in conda info
include packages from setup.py develop in conda list (with use_pip)
raise a warning instead of dying when the history file is invalid
use urllib.quote on the proxy password
make conda search --outdated --canonical work
pin the Python version during conda init
fix some metadata that is written for Python during conda init
allow comments in a pinned file
allow installing and updating menuinst on Windows
allow conda create with both --file and listed packages
better handling of some nonexistent packages
fix command line flags in conda package
fix a bug in the ftp adapter

2014-06-10 3.5.5:

remove another instance pycosat version detection, which fails on Windows, see issue #761

2014-06-10 3.5.4:

remove pycosat version detection, which fails on Windows, see issue #761

2014-06-09 3.5.3:

fix conda update to correctly not install packages that are already up-to-date
always fail with connection error in download
the package resolution is now much faster and uses less memory
add ssl_verify option in condarc to allow ignoring SSL certificate verification, see issue #737

2014-05-27 3.5.2:

fix bug in activate.bat and deactivate.bat on Windows

2014-05-26 3.5.1:

fix proxy support - conda now prompts for proxy username and password again
fix activate.bat on Windows with spaces in the path
update optional psutil dependency was updated to psutil 2.0 or higher

2014-05-15 3.5.0:

replace use of urllib2 with requests. requests is now a hard dependency of conda.
add ability to only allow system-wise specified channels
hide binstar from output of conda info

2014-05-05 3.4.3:

allow prefix replacement in binary files, see issue #710
check if creating hard link is possible and otherwise copy, during install
allow circular dependencies

2014-04-21 3.4.2:

conda clean --lock: skip directories that don't exist, fixes #648
fixed empty history file causing crash, issue #644
remove timezone information from history file, fixes issue #651
fix PackagesNotFound error for missing recursive dependencies
change the default for adding cache from the local package cache - known is now the default and the option to use index metadata from the local package cache is --unknown
add --alt-hint as a method to get an alternate form of a hint for unsatisfiable packages
add conda package --ls-files to list files in a package
add ability to pin specs in an environment. To pin a spec, add a file called pinned to the environment's conda-meta directory with the specs to pin. Pinned specs are always kept installed, unless the --no-pin flag is used.
fix keyboard interrupting of external commands. Now keyboard interupting conda build correctly removes the lock file
add no_link ability to conda, see issue #678

2014-04-07 3.4.1:

always use a pkgs cache directory associated with an envs directory, even when using -p option with an arbitrary a prefix which is not inside an envs dir
add setting of PYTHONHOME to conda info --system
skip packages with bad metadata

2014-04-02 3.4.0:

added revision history to each environment:
- conda list --revisions
- conda install --revision
- log is stored in conda-meta/history
allow parsing pip-style requirement files with --file option and in command line arguments, e.g. conda install 'numpy>=1.7', issue #624
fix error message for --file option when file does not exist
allow DEFAULTS in CONDA_ENVS_PATH, which expands to the defaults settings, including the condarc file
don't install a package with a feature (like mkl) unless it is specifically requested (i.e., that feature is already enabled in that environment)
add ability to show channel URLs when displaying what is going to be downloaded by setting "show_channel_urls: True" in condarc
fix the --quiet option
skip packages that have dependencies that can't be found

2014-03-24 3.3.2:

fix the --file option
check install arguments before fetching metadata
fix a printing glitch with the progress bars
give a better error message for conda clean with no arguments
don't include unknown packages when searching another platform

2014-03-19 3.3.1:

Fix setting of PS1 in activate.
Add conda update --all.
Allow setting CONDARC=' ' to use no condarc.
Add conda clean --packages.
Don't include bin/conda, bin/activate, or bin/deactivate in conda package.

2014-03-18 3.3.0:

allow new package specification, i.e. ==, >=, >, <=, <, != separated by ',' for example: >=2.3,<3.0
add ability to disable self update of conda, by setting "self_update: False" in .condarc
Try installing packages using the old way of just installing the maximum versions of things first. This provides a major speedup of solving the package specifications in the cases where this scheme works.
Don't include python=3.3 in the specs automatically for the Python 3 version of conda. This allows you to do "conda create -n env package" for a package that only has a Python 2 version without specifying "python=2". This change has no effect in Python 2.
Automatically put symlinks to conda, activate, and deactivate in each environment on Unix.
On Unix, activate and deactivate now remove the root environment from the PATH. This should prevent "bleed through" issues with commands not installed in the activated environment but that are installed in the root environment. If you have "setup.py develop" installed conda on Unix, you should run this command again, as the activate and deactivate scripts have changed.
Begin work to support Python 3.4.
Fix a bug in version comparison
Fix usage of sys.stdout and sys.stderr in environments like pythonw on Windows where they are nonstandard file descriptors.

2014-03-12 3.2.1:

fix installing packages with irrational versions
fix installation in the api
use a logging handler to print the dots

2014-03-11 3.2.0:

print dots to the screen for progress
move logic functions from resolve to logic module

2014-03-07 3.2.0a1:

conda now uses pseudo-boolean constraints in the SAT solver. This allows it to search for all versions at once, rather than only the latest (issue #491).
Conda contains a brand new logic submodule for converting pseudo-boolean constraints into SAT clauses.

2014-03-07 3.1.1:

check if directory exists, fixed issue #591

2014-03-07 3.1.0:

local packages in cache are now added to the index, this may be disabled by using the --known option, which only makes conda use index metadata from the known remote channels
add --use-index-cache option to enable using cache of channel index files
fix ownership of files when installing as root on Linux
conda search: add '.' symbol for extracted (cached) packages

2014-02-20 3.0.6:

fix 'conda update' taking build number into account

2014-02-17 3.0.5:

allow packages from create_default_packages to be overridden from the command line
fixed typo install.py, issue #566
try to prevent accidentally installing into a non-root conda environment

2014-02-14 3.0.4:

conda update: don't try to update packages that are already up-to-date

2014-02-06 3.0.3:

improve the speed of clean --lock
some fixes to conda config
more tests added
choose the first solution rather than the last when there are more than one, since this is more likely to be the one you want.

2014-02-03 3.0.2:

fix detection of prefix being writable

2014-01-31 3.0.1:

bug: not having track_features in condarc now uses default again
improved test suite
remove numpy version being treated special in plan module
if the post-link.(bat|sh) fails, don't treat it as though it installed, i.e. it is not added to conda-meta
fix activate if CONDA_DEFAULT_ENV is invalid
fix conda config --get to work with list keys again
print the total download size
fix a bug that was preventing conda from working in Python 3
add ability to run pre-link script, issue #548

2014-01-24 3.0.0:

removed build, convert, index, and skeleton commands, which are now part of the conda-build project: https://github.com/conda/conda-build
limited pip integration to conda list, that means conda install no longer calls pip install # !!!
add ability to call sub-commands named 'conda-x'
The -c flag to conda search is now shorthand for --channel, not --canonical (this is to be consistent with other conda commands)
allow changing location of .condarc file using the CONDARC environment variable
conda search now shows the channel that the package comes from
conda search has a new --platform flag for searching for packages in other platforms.
remove condarc warnings: issue #526#issuecomment-33195012

2014-01-17 2.3.1:

add ability create info/no_softlink
add conda convert command to convert non-platform-dependent packages from one platform to another (experimental)
unify create, install, and update code. This adds many features to create and update that were previously only available to install. A backwards incompatible change is that conda create -f now means --force, not --file.

2014-01-16 2.3.0:

automatically prepend http://conda.binstar.org/ (or the value of channel_alias in the .condarc file) to channels whenever the channel is not a URL or the word 'defaults or 'system'
recipes made with the skeleton pypi command will use setuptools instead of distribute
re-work the setuptools dependency and entry_point logic so that non console_script entry_points for packages with a dependency on setuptools will get correct build script with conda skeleton pypi
add -m, --mkdir option to conda install
add ability to disable soft-linking

2014-01-06 2.2.8:

add check for chrpath (on Linux) before build is started, see issue #469
conda build: fixed ELF headers not being recognized on Python 3
fixed issues: #467, #476

2014-01-02 2.2.7:

fixed bug in conda build related to lchmod not being available on all platforms

2013-12-31 2.2.6:

fix test section for automatic recipe creation from pypi using --build-recipe
minor Py3k fixes for conda build on Linux
copy symlinks as symlinks, issue #437
fix explicit install (e.g. from output of conda list -e) in root env
add pyyaml to the list of packages which can not be removed from root environment
fixed minor issues: #365, #453

2013-12-17 2.2.5:

conda build: move broken packages to conda-bld/broken
conda config: automatically add the 'defaults' channel
conda build: improve error handling for invalid recipe directory
add ability to set build string, issue #425
fix LD_RUN_PATH not being set on Linux under Python 3, see issue #427, thanks peter1000

2013-12-10 2.2.4:

add support for execution with the -m switch (issue #398), i.e. you can execute conda also as: python -m conda
add a deactivate script for windows
conda build adds .pth-file when it encounters an egg (TODO)
add ability to preserve egg directory when building using build/preserve_egg_dir: True
allow track_features in ~/.condarc
Allow arbitrary source, issue #405
fixed minor issues: #393, #402, #409, #413

2013-12-03 2.2.3:

add "foreign mode", i.e. disallow install of certain packages when using a "foreign" Python, such as the system Python
remove activate/deactivate from source tarball created by sdist.sh, in order to not overwrite activate script from virtualenvwrapper

2013-11-27 2.2.2:

remove ARCH environment variable for being able to change architecture
add PKG_NAME, PKG_VERSION to environment when running build.sh, .-post-link.sh and .-pre-unlink.sh

2013-11-15 2.2.1:

minor fixes related to make conda pip installable
generated conda meta-data missing 'files' key, fixed issue #357

2013-11-14 2.2.0:

add conda init command, to allow installing conda via pip
fix prefix being replaced by placeholder after conda build on Unix
add 'use_pip' to condarc configuration file
fixed activate on Windows to set CONDA_DEFAULT_ENV
allow setting "always_yes: True" in condarc file, which implies always using the --yes option whenever asked to proceed

2013-11-07 2.1.0:

fix rm_egg_dirs so that the .egg_info file can be a zip file
improve integration with pip
- conda list now shows pip installed packages
- conda install will try to install via "pip install" if no conda package is available (unless --no-pip is provided)
- conda build has a new --build-recipe option which will create a recipe (stored in /conda-recipes) from pypi then build a conda package (and install it)
- pip list and pip install only happen if pip is installed
enhance the locking mechanism so that conda can call itself in the same process.

2013-11-04 2.0.4:

ensure lowercase name when generating package info, fixed issue #329
on Windows, handle the .nonadmin files

2013-10-28 2.0.3:

update bundle format
fix bug when displaying packages to be downloaded (thanks Crystal)

2013-10-27 2.0.2:

add --index-cache option to clean command, see issue #321
use RPATH (instead of RUNPATH) when building packages on Linux

2013-10-23 2.0.1:

add --no-prompt option to conda skeleton pypi
add create_default_packages to condarc (and --no-default-packages option to create command)

2013-10-01 2.0.0:

added user/root mode and ability to soft-link across filesystems
added create --clone option for copying local environments
fixed behavior when installing into an environment which does not exist yet, i.e. an error occurs
fixed install --no-deps option
added --export option to list command
allow building of packages in "user mode"
regular environment locations now used for build and test
add ability to disallow specification names
add ability to read help messages from a file when install location is RO
restore backwards compatibility of share/clone for conda-api
add new conda bundle command and format
pass ARCH environment variable to build scripts
added progress bar to source download for conda build, issue #230
added ability to use url instead of local file to conda install --file and conda create --file options

2013-09-06 1.9.1:

fix bug in new caching of repodata index

2013-09-05 1.9.0:

add caching of repodata index
add activate command on Windows
add conda package --which option, closes issue 163
add ability to install file which contains multiple packages, issue 256
move conda share functionality to conda package --share
update documentation
improve error messages when external dependencies are unavailable
add implementation for issue 194: post-link or pre-unlink may append to a special file ${PREFIX}/.messages.txt for messages, which is display to the user's console after conda completes all actions
add conda search --outdated option, which lists only installed packages for which newer versions are available
fixed numerous Py3k issues, in particular with the build command

2013-08-16 1.8.2:

add conda build --check option
add conda clean --lock option
fixed error in recipe causing conda traceback, issue 158
fixes conda build error in Python 3, issue 238
improve error message when test command fails, as well as issue 229
disable Python (and other packages which are used by conda itself) to be updated in root environment on Windows
simplified locking, in particular locking should never crash conda when files cannot be created due to permission problems

2013-08-07 1.8.1:

fixed conda update for no arguments, issue 237
fix setting prefix before calling should_do_win_subprocess() part of issue 235
add basic subversion support when building
add --output option to conda build

2013-07-31 1.8.0:

add Python 3 support (thanks almarklein)
add Mercurial support when building from source (thanks delicb)
allow Python (and other packages which are used by conda itself) to be updated in root environment on Windows
add conda config command
add conda clean command
removed the conda pip command
improve locking to be finer grained
made activate/deactivate work with zsh (thanks to mika-fischer)
allow conda build to take tarballs containing a recipe as arguments
add PKG_CONFIG_PATH to build environment variables
fix entry point scripts pointing to wrong python when building Python 3 packages
allow source/sha1 in meta.yaml, issue 196
more informative message when there are unsatisfiable package specifications
ability to set the proxy urls in condarc
conda build asks to upload to binstar. This can also be configured by changing binstar_upload in condarc.
basic tab completion if the argcomplete package is installed and eval "$(register-python-argcomplete conda)" is added to the bash profile.

2013-07-02 1.7.2:

fixed conda update when packages include a post-link step which was caused by subprocess being lazily imported, fixed by 0d0b860
improve error message when 'chrpath' or 'patch' is not installed and needed by build framework
fixed sharing/cloning being broken (issue 179)
add the string LOCKERROR to the conda lock error message

2013-06-21 1.7.1:

fix "executable" not being found on Windows when ending with .bat when launching application
give a better error message from when a repository does not exist

2013-06-20 1.7.0:

allow ${PREFIX} in app_entry
add binstar upload information after conda build finishes

2013-06-20 1.7.0a2:

add global conda lock file for only allowing one instance of conda to run at the same time
add conda skeleton command to create recipes from PyPI
add ability to run post-link and pre-unlink script

2013-06-13 1.7.0a1:

add ability to build conda packages from "recipes", using the conda build command, for some examples, see: https://github.com/ContinuumIO/conda-recipes
fixed bug in conda install --force
conda update command no longer uses anaconda as default package name
add proxy support
added application API to conda.api module
add -c/--channel and --override-channels flags (issue 121).
add default and system meta-channels, for use in .condarc and with -c (issue 122).
fixed ability to install ipython=0.13.0 (issue 130)

2013-06-05 1.6.0:

update package command to reflect changes in repodata
fixed refactoring bugs in share/clone
warn when anaconda processes are running on install in Windows (should fix most permissions errors on Windows)

2013-05-31 1.6.0rc2:

conda with no arguments now prints help text (issue 111)
don't allow removing conda from root environment
conda update python does no longer update to Python 3, also ensure that conda itself is always installed into the root environment (issue 110)

2013-05-30 1.6.0rc1:

major internal refactoring
use new "depends" key in repodata
uses pycosat to solve constraints more efficiently
add hard-linking on Windows
fixed linking across filesystems (issue 103)
add conda remove --features option
added more tests, in particular for new dependency resolver
add internal DSL to perform install actions
add package size to download preview
add conda install --force and --no-deps options
fixed conda help command
add conda remove --all option for removing entire environment
fixed source activate on systems where sourcing a gives "bash" as $0
add information about installed versions to conda search command
removed known "locations"
add output about installed packages when update and install do nothing
changed default when prompted for y/n in CLI to yes

2013-04-29 1.5.2:

fixed issue 59: bad error message when pkgs dir is not writable

2013-04-19 1.5.1:

fixed issue 71 and (73 duplicate): not being able to install packages starting with conda (such as 'conda-api')
fixed issue 69 (not being able to update Python / NumPy)
fixed issue 76 (cannot install mkl on OSX)

2013-03-22 1.5.0:

add conda share and clone commands
add (hidden) --output-json option to clone, share and info commands to support the conda-api package
add repo sub-directory type 'linux-armv6l'

2013-03-12 1.4.6:

fixed channel selection (issue #56)

2013-03-11 1.4.5:

fix issue #53 with install for meta packages
add -q/--quiet option to update command

2013-03-09 1.4.4:

use numpy 1.7 as default on all platfroms

2013-03-09 1.4.3:

fixed bug in conda.builder.share.clone_bundle()

2013-03-08 1.4.2:

feature selection fix for update
Windows: don't allow linking or unlinking python from the root environment because the file lock, see issue #42

2013-03-07 1.4.1:

fix some feature selection bugs
never exit in activate and deactivate
improve help and error messages

2013-03-05 1.4.0:

fixed conda pip NAME==VERSION
added conda info --license option
add source activate and deactivate commands
rename the old activate and deactivate to link and unlink
add ability for environments to track "features"
add ability to distinguish conda build packages from Anaconda packages by adding a "file_hash" meta-data field in info/index.json
add conda.builder.share module

2013-02-05 1.3.5:

fixed detecting untracked files on Windows
removed backwards compatibility to conda 1.0 version

2013-01-28 1.3.4:

fixed conda installing itself into environments (issue #10)
fixed non-existing channels being silently ignored (issue #12)
fixed trailing slash in ~/.condarc file cause crash (issue #13)
fixed conda list not working when ~/.condarc is missing (issue #14)
fixed conda install not working for Python 2.6 environment (issue #17)
added simple first cut implementation of remove command (issue #11)
pip, build commands: only package up new untracked files
allow a system-wide <sys.prefix>/.condarc (~/.condarc takes precedence)
only add pro channel is no condarc file exists (and license is valid)

2013-01-23 1.3.3:

fix conda create not filtering channels correctly
remove (hidden) --test and --testgui options

2013-01-23 1.3.2:

fix deactivation of packages with same build number note that conda upgrade did not suffer from this problem, as was using separate logic

2013-01-22 1.3.1:

fix bug in conda update not installing new dependencies

2013-01-22 1.3.0:

added conda package command
added conda index command
added -c, --canonical option to list and search commands
fixed conda --version on Windows
add this changelog

2012-11-21 1.2.1:

remove ambiguity from conda update command

2012-11-20 1.2.0:

"conda upgrade" now updates from AnacondaCE to Anaconda (removed upgrade2pro
add versioneer

2012-11-13 1.1.0:

Many new features implemented by Bryan

2012-09-06 1.0.0:

initial release

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