diff --git a/packages/p/pisi/actions.py b/packages/p/pisi/actions.py
index 59c3a347144e..5726dffb05e0 100644
--- a/packages/p/pisi/actions.py
+++ b/packages/p/pisi/actions.py
@@ -4,7 +4,17 @@ def install():
     pythonmodules.install()
 
     pisitools.dosym("eopkg-cli", "/usr/bin/eopkg")
-    pisitools.dosym("uneopkg", "/usr/bin/unpisi")
-    pisitools.dosym("lseopkg", "/usr/bin/lspisi")
+    pisitools.dosym("uneopkg.py2", "/usr/bin/unpisi.py2")
+    pisitools.dosym("lseopkg.py2", "/usr/bin/lspisi.py2")
     pisitools.dodir("/etc/mudur")
     shelltools.echo("%s/etc/mudur/locale" % get.installDIR(), "")
+
+    # Everything below here _removes_ stuff that we don't want installed.
+    # After the epoch bump, The goal is to make pisi own as little as
+    # practically possible, so that eopkg4 can own it instead for
+    # co-installability purposes as we deprecate pisi.
+    #
+    #shelltools.unlinkDir("%s/usr/share/defaults" % get.installDIR())
+    #pisitools.remove("/usr/share/defaults/eopkg/eopkg.conf")
+    pisitools.remove("/usr/share/doc/pisi/dependency.pdf")
+    pisitools.remove("/usr/share/doc/pisi/package_versions.pdf")
diff --git a/packages/p/pisi/comar/manager.py b/packages/p/pisi/comar/manager.py
index b838b80f2db3..ab89bc48693e 100755
--- a/packages/p/pisi/comar/manager.py
+++ b/packages/p/pisi/comar/manager.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2005-2009 TUBITAK/UEKAE
@@ -128,7 +128,7 @@ def privileged(func):
     Decorator for synchronizing privileged functions
     """
     def wrapper(*__args,**__kw):
-        operation = "System.Manager.%s" % func.func_name
+        operation = "System.Manager.%s" % func.__name__
 
         started(operation)
         _init_pisi()
@@ -137,7 +137,7 @@ def wrapper(*__args,**__kw):
         except KeyboardInterrupt:
             cancelled()
             return
-        except Exception, e:
+        except Exception(e):
             notify("System.Manager", "error", str(e))
             return
         finished(operation)
@@ -182,7 +182,7 @@ def updateAllRepositories():
     for repo in repos:
         try:
             pisi.api.update_repo(repo)
-        except pisi.db.repodb.RepoError, e:
+        except pisi.db.repodb.RepoError(e):
             notify("System.Manager", "error", str(e))
 
 @privileged
@@ -198,7 +198,7 @@ def removeRepository(repo=None):
 @privileged
 def setRepoActivities(repos=None):
     if repos:
-        for repo, active in repos.items():
+        for repo, active in list(repos.items()):
             pisi.api.set_repo_activity(repo, active)
 
 @privileged
diff --git a/packages/p/pisi/comar/package.py b/packages/p/pisi/comar/package.py
index f3f6b70c5a3d..7daa908ad566 100755
--- a/packages/p/pisi/comar/package.py
+++ b/packages/p/pisi/comar/package.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 
 import os
 
diff --git a/packages/p/pisi/component.xml b/packages/p/pisi/component.xml
index f19004762552..9a8af4ce3b80 100644
--- a/packages/p/pisi/component.xml
+++ b/packages/p/pisi/component.xml
@@ -1,3 +1,3 @@
 <PISI>
-    <Name>system.base</Name>
+    <Name>system.utils</Name>
 </PISI>
diff --git a/packages/p/pisi/pspec.xml b/packages/p/pisi/pspec.xml
index bac44066c5f4..26e05414b5e5 100644
--- a/packages/p/pisi/pspec.xml
+++ b/packages/p/pisi/pspec.xml
@@ -12,13 +12,14 @@
         <IsA>app:console</IsA>
         <Summary>PISI</Summary>
         <Description>PISI is a modern package management system implemented in Python. Some of its main features are: package sources are written in XML and python, implements all functions through a simple-to-use API, integrates low-level and high-level package management features.</Description>
-        <Archive sha1sum="3e71b2bbd5a3016c03ad52a5076a51b67dda9e09" type="targz">https://github.com/getsolus/eopkg/archive/refs/tags/v3.11.tar.gz</Archive>
+        <Archive sha1sum="55bc114eea82ec1678ea11a2b88a2f12fbd5a9f4" type="targz">https://github.com/getsolus/eopkg/archive/refs/tags/v3.12.tar.gz</Archive>
         <BuildDependencies>
-            <Dependency>python</Dependency>
-            <Dependency>python2-xattr</Dependency>
             <Dependency>db5</Dependency>
-            <Dependency>piksemel</Dependency>
             <Dependency>intltool</Dependency>
+            <Dependency>piksemel</Dependency>
+            <Dependency>python</Dependency>
+            <Dependency>python2-ordered-set</Dependency>
+            <Dependency>python2-xattr</Dependency>
         </BuildDependencies>
 
         <Patches>
@@ -28,40 +29,65 @@
     <Package>
         <Name>pisi</Name>
         <Files>
+            <Path fileType="config">/etc/pisi/pisi.conf</Path>
+            <Path fileType="config">/etc/mudur/locale</Path>
+            <Path fileType="data">/usr/lib/tmpfiles.d/pisi.conf</Path>
+            <Path fileType="data">/usr/share/defaults/eopkg</Path>
+            <Path fileType="data">/usr/share/factory/var/db/comar3/scripts/System.Manager/pisi.py</Path>
+            <Path fileType="data">/usr/share/mime/packages</Path>
+            <Path fileType="doc">/usr/share/doc</Path>
+            <Path fileType="doc">/usr/share/man/man1</Path>
             <Path fileType="executable">/usr/bin</Path>
             <Path fileType="executable">/usr/sbin</Path>
             <Path fileType="library">/usr/lib/python*</Path>
             <Path fileType="localedata">/usr/share/locale</Path>
-            <Path fileType="doc">/usr/share/doc</Path>
-            <Path fileType="doc">/usr/share/man/man1</Path>
-            <Path fileType="data">/usr/share/defaults/eopkg</Path>
-            <Path fileType="config">/etc/pisi/pisi.conf</Path>
-            <Path fileType="config">/etc/mudur/locale</Path>
-            <Path fileType="data">/usr/share/mime/packages</Path>
-            <Path fileType="data">/usr/share/factory/var/db/comar3/scripts/System.Manager/pisi.py</Path>
-            <Path fileType="data">/usr/lib/tmpfiles.d/pisi.conf</Path>
         </Files>
         <AdditionalFiles>
+            <AdditionalFile owner="root" permission="0644" target="/usr/lib/tmpfiles.d/pisi.conf">pisi.tmpfiles</AdditionalFile>
+            <!-- BEGIN should be owned by eopkg(py3) after the epoch bump -->
             <AdditionalFile owner="root" permission="0644" target="/usr/share/defaults/eopkg/mirrors.conf">mirrors.conf</AdditionalFile>
             <AdditionalFile owner="root" permission="0644" target="/usr/share/defaults/eopkg/sandbox.conf">sandbox.conf</AdditionalFile>
-            <AdditionalFile owner="root" permission="0644" target="/usr/lib/tmpfiles.d/pisi.conf">pisi.tmpfiles</AdditionalFile>
+            <!-- END should be owned by eopkg(py3) after the epoch bump -->
             <AdditionalFile owner="root" permission="0644" target="/usr/share/factory/var/db/comar3/scripts/System.Manager/pisi.py">manager.py</AdditionalFile>
+            <!-- BEGIN should be owned by eopkg(py3) after the epoch bump -->
             <AdditionalFile owner="root" permission="0644" target="/usr/share/man/man1/eopkg.1">eopkg.1</AdditionalFile>
+            <!-- END should be owned by eopkg(py3) after the epoch bump -->
         </AdditionalFiles>
         <Provides>
             <COMAR script="package.py">System.Package</COMAR>
             <COMAR script="manager.py">System.Manager</COMAR>
         </Provides>
         <RuntimeDependencies>
-            <Dependency>python</Dependency>
-            <Dependency>python2-xattr</Dependency>
             <Dependency>db5</Dependency>
+            <!-- for documentation etc. once pisi / eopkg.py2 is the "lesser" twin (after epoch bump)
+            <Dependency>eopkg</Dependency>
+            -->
             <Dependency>piksemel</Dependency>
+            <Dependency>python</Dependency>
+            <Dependency>python2-ordered-set</Dependency>
+            <Dependency>python2-xattr</Dependency>
             <Dependency>usysconf</Dependency>
         </RuntimeDependencies>
     </Package>
 
     <History>
+        <Update release="112">
+            <Date>24-06-2024</Date>
+            <Version>3.12</Version>
+            <Comment>Update to legacy/co-installable pisi version v3.12
+**Summary**
+- Sync with pisi v3.12 upstream release, which always installs baselayout eopkg first if they are present in any given install/upgrade order.
+- Add rundep on python2-ordered-set package
+- Make pisi co-installable with the eopkg(py3) package
+- Miscellaneous shebang and file name extension changes
+- Sort pspec.xml file sections lexically for ease of reading/tweaking
+- Change long_description to indicate that pisi is now considered legacy
+- Port pisi comar/*.py build scripts to python3 to enable building when
+  using `eopkg.py3 build` (Thank you to @ultr4_l4s3r for the fix)
+</Comment>
+            <Name>Rune Morling</Name>
+            <Email>ermo@serpentos.com</Email>
+        </Update>
         <Update release="111">
             <Date>10-06-2024</Date>
             <Version>3.11</Version>