bug#15890: Please provide a way to delete old build directories.

bug#15890: Please provide a way to delete old build directories.

[John Darrington]

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When packages are built using guix build --keep-failed the build directories
are created in /tmp/nix* (as they should be).

But it is impossible to delete these directories without special priviliges.
The user who called guix build --keep-failed cannot delete them because they
are owned by guix-builder

Can we please either:

1. Have a command (or option to guix gc) to remove them ; OR

2. Arrange for the ownership of such directories to be changed to the calling user, 
   after the build has finished.

J'

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bug#15890: Please provide a way to delete old build directories.

[Ludovic Courtès]

John Darrington <john@darrington.wattle.id.au> skribis:

> When packages are built using guix build --keep-failed the build directories
> are created in /tmp/nix* (as they should be).
>
> But it is impossible to delete these directories without special priviliges.
> The user who called guix build --keep-failed cannot delete them because they
> are owned by guix-builder
>
> Can we please either:
>
> 1. Have a command (or option to guix gc) to remove them ; OR
>
> 2. Arrange for the ownership of such directories to be changed to the calling user, 
>    after the build has finished.

I agree.  I would go for solution #2.

(Note that this will have to be submitted to the Nix project, since the
C++ code under nix/ is imported from there.)

Ludo’.

bug#15890: Please provide a way to delete old build directories.

[Hartmut Goebel]

Hi,

any news on this? Did anybody pass this to the Nix project?

   Arrange for the ownership of such directories to be changed to the calling user, 
   after the build has finished


Would also allow for easily debugging build (by entering the environment
and restart the build).

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |

bug#15890: Please provide a way to delete old build directories.

[Ludovic Courtès]

Hi,

Hartmut Goebel <h.goebel@crazy-compilers.com> skribis:

> any news on this? Did anybody pass this to the Nix project?

No, but it shouldn’t be too hard: look for ‘settings.keepFailed’ in
libstore/build.cc and drop a chown -R in there.  We need to propagate
the UID of the client who connected to the daemon, though.

Ludo’.

bug#15890: Please provide a way to delete old build directories.

[Ludovic Courtès]

John Darrington <john@darrington.wattle.id.au> skribis:

> When packages are built using guix build --keep-failed the build directories
> are created in /tmp/nix* (as they should be).
>
> But it is impossible to delete these directories without special priviliges.
> The user who called guix build --keep-failed cannot delete them because they
> are owned by guix-builder
>
> Can we please either:
>
> 1. Have a command (or option to guix gc) to remove them ; OR
>
> 2. Arrange for the ownership of such directories to be changed to the calling user, 
>    after the build has finished.

This was fixed by Hartmut in commit
2608e40988ba8cf51723fe0d21bdedf6b3997c9c.

Ludo’.