pristine-tar error: Can't exec "cmp": No such file or directory

[Christian Ehrhardt ]

$ git ubuntu import vulkan-tools -d vulkan-tools --no-push --no-fetch

...
10/06/2021 11:32:33 - ERROR:Command exited 128: pristine-tar verify /home/paelzer/work/vulkan-tools/vulkan-tools/.git/git-ubuntu-cache/vulkan-tools_1.1.82.0+dfsg1.orig.tar.gz
10/06/2021 11:32:33 - ERROR:stdout:
10/06/2021 11:32:33 - ERROR:stderr: fatal: Path 'vulkan-tools_1.1.82.0+dfsg1.orig.tar.gz.delta' does not exist in 'refs/heads/pristine-tar'
  pristine-tar: git show refs/heads/pristine-tar:vulkan-tools_1.1.82.0+dfsg1.orig.tar.gz.delta failed

...
10/06/2021 11:34:56 - INFO:Downloading vulkan-tools_1.2.189.0+dfsg1-1.debian.tar.xz from launchpad.net (0.003 MiB)
10/06/2021 11:34:58 - ERROR:Command exited 1: gbp import-orig --no-merge --upstream-branch do-not-push --pristine-tar --no-interactive --no-symlink-orig '--upstream-tag=importer/upstream/debian/%(version)s.xz' /home/paelzer/work/vulkan-tools/vulkan-tools/.git/git-ubuntu-cache/vulkan-tools_1.2.189.0+dfsg1.orig.tar.xz
10/06/2021 11:34:58 - ERROR:stdout: gbp:info: Importing '/home/paelzer/work/vulkan-tools/vulkan-tools/.git/git-ubuntu-cache/vulkan-tools_1.2.189.0+dfsg1.orig.tar.xz' to branch 'do-not-push'...
  gbp:info: Source package is vulkan-tools
  gbp:info: Upstream version is 1.2.189.0+dfsg1
  gbp:info: Rolling back branch do-not-push by resetting it to 830f1ed7c9191b4b941e3d0db73b76545e647f08
  gbp:info: Rolling back branch pristine-tar by resetting it to 799a37570a876452336755c1fa75090e0f97431c

10/06/2021 11:34:58 - ERROR:stderr: gbp:error: Import of /home/paelzer/work/vulkan-tools/vulkan-tools/.git/git-ubuntu-cache/vulkan-tools_1.2.189.0+dfsg1.orig.tar.xz failed: Couldn't commit to 'pristine-tar' with upstream '20bc2fb4e4cec9f15eff5abb5c92e78d3779e32d': Can't exec "cmp": No such file or directory at /snap/git-ubuntu/652/usr/share/perl5/Pristine/Tar.pm line 127.
  Failed to execute cmp: No such file or directory
  pristine-tar: failed to generate delta
  gbp:error: Error detected, Will roll back changes.
  gbp:error: Rolled back changes after import error.

...

Are these any problem?
installed: 1.0-79-g0500536 (652) 114MB classic

[Robie Basak (racb)]

Thanks. Looks like we need to make the cmp command available in the snap for pristine-tar like some of the others (and there's an existing test pattern to avoid future regression).

If it helps, there's an import option to skip pristine-tar. I forget the name, but if -h doesn't list it try inspecting parse_args in importer.py.

[Christian Ehrhardt  (paelzer)]

> If it helps, there's an import option to skip pristine-tar. I forget the
> name, but if -h doesn't list it try inspecting parse_args in
> importer.py.

It worked well enough for me to use it, I only filed this since I want
all edge cases documented for better coordination on a v1.x down the
road and towards the vision of importing universe.

[Andreas Hasenack (ahasenack)]

I'm seeing this in the production importer service as well, fwiw.