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Versioneer does not work in the Guix build container because:
* VCS information is unavailable
* the build directory does not have the supported "$name-$version" format
* as of 0.21, versioneer has no way to override the discovered values
This patch adds support for extracting version from the
'/tmp/guix-build-foo-0.1.drv-0' style directories created by the daemon.
diff --git a/src/from_parentdir.py b/src/from_parentdir.py
index 69ada9a..e0fac8f 100644
--- a/src/from_parentdir.py
+++ b/src/from_parentdir.py
@@ -15,6 +15,21 @@ def versions_from_parentdir(parentdir_prefix, root, verbose):
return {"version": dirname[len(parentdir_prefix):],
"full-revisionid": None,
"dirty": False, "error": None, "date": None}
+ # Guix specific patch: try extracting the version from the build
+ # directory.
+ elif dirname.startswith("guix-build-"):
+ delimiter = dirname.rindex(".drv-")
+ name_and_version = dirname[11:delimiter]
+ if name_and_version.startswith(parentdir_prefix):
+ guix_version = name_and_version[len(parentdir_prefix):]
+ elif name_and_version.startswith("python-{}".format(parentdir_prefix)):
+ guix_version = name_and_version[(7 + len(parentdir_prefix)):]
+ else:
+ break
+ return {"version": guix_version,
+ "full-revisionid": None,
+ "dirty": False, "error": None, "date": None}
+
rootdirs.append(root)
root = os.path.dirname(root) # up a level
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