Cecil does not generate portable PDB checksum

[ltrzesniewski]

Currently, Cecil does not generate a PdbChecksum debug directory entry in the assembly it writes when it produces a portable PDB file.

This entry is validated by the NuGet gallery when you try to submit a symbol package (.snupkg file), making it impossible to upload such packages for assemblies processed by Cecil.

Here's the information needed to implement this feature:

• PdbChecksum entry specification
• Validation code used by NuGet (you can easily extract this method if you remove telemetry and output message code, and reference System.Reflection.Metadata)
• Docs about symbol package constraints

I may try to implement this in the future unless someone else is interested. 😉

Related issue: ltrzesniewski/InlineIL.Fody#12
/cc @sakno

[Starnick]

I was just investigating snupkg support for my nuget libraries and ran into this too :(

[ltrzesniewski]

FWIW I didn't try to implement this as apparently @jbevain started to work on it in #617.

[Starnick]

@jbevain Is this PR done, just waiting to be merged?

[jbevain]

Heh, no otherwise it would be merged :)

The PR in its current state re-orders some internal implementation detail to write the debug symbols before writing the assembly as this requires computing the pdb checksum before writing it in the assembly.

[clairernovotny]

As a workaround for NuGet, and better than snupkg IMO, is to include the PDB in the main NuPkg. You can do that like this:
https://github.com/clairernovotny/DeterministicBuilds/blob/master/Directory.Build.props#L10

[sakno]

@clairernovotny , currently I'm using embedded PDB <DebugType>embedded</DebugType> as a workaround.

[clairernovotny]

@sakno that works too