[Nix-dev] Git + gettextWithExpat incompatibility

[Cody Opel]

Gettext no longer depends on expat as of the latest release (0.19.7).

https://lists.gnu.org/archive/html/info-gnu/2015-12/msg00013.html

On Tue, Feb 16, 2016 at 2:20 PM, zimbatm <zimbatm at zimbatm.com> wrote:

> Can you create an issue ?
>
> I can reproduce the issue on master. If just `nixos.gettext` is installed
> it works fine.
> I also tried changing the EDITOR but that's not it.
> Note that git-rebase is implemented in bash
>
> On Tue, 16 Feb 2016 at 18:23 Mikhail <volhovm.cs at gmail.com> wrote:
>
>> Hi!
>>
>> I've discovered an interesting bug. Here's how it's possible to
>> reproduce it:
>>
>> 1. Install both `gettextWithExpat` and `git` package using nix-env or
>> declaration in `configuration.nix`. I've tried different git versions,
>> all them work this way. Not sure about `gettextWithExpat` versions, but
>> I'm using 0.19.6 with `nixos-unstable` channel on my system.
>> 2. cd into any git repository directory
>> 3. Run `git rebase` or `git stash` with any arguments (except options,
>> `--help` works well). Git will do nothing and return code 0.
>>
>> Here's an illustration of how it works:
>> ```
>> [volhovm at avishai:~/code]$ mkdir testGit
>> [volhovm at avishai:~/code]$ cd testGit/
>> [volhovm at avishai:~/code/testGit]$ git init
>> Initialized empty Git repository in /home/volhovm/code/testGit/.git/
>> [volhovm at avishai:~/code/testGit]$ nix-env -q
>> gettext-expat-gettext-0.19.6
>> git-minimal-2.7.0
>> #other stuff
>> [volhovm at avishai:~/code/testGit]$ git rebase asoehuasnotuehsoathueao
>> [volhovm at avishai:~/code/testGit]$ echo $?
>> 0
>> [volhovm at avishai:~/code/testGit]$ git stash asoehuasnoteu
>> [volhovm at avishai:~/code/testGit]$ echo $?
>> 0
>> [volhovm at avishai:~/code/testGit]$ nix-env -e gettext-expat-gettext
>> uninstalling ‘gettext-expat-gettext-0.19.6’
>> [volhovm at avishai:~/code/testGit]$ git rebase aoeuaoeuaoe
>> fatal: Needed a single revision
>> invalid upstream aoeuaoeuaoe
>> [volhovm at avishai:~/code/testGit]$ echo $?
>> 1
>> [volhovm at avishai:~/code/testGit]$ git stash aoeuaoeuaeo
>> usage: git stash list [<options>]
>>    or: git stash show [<stash>]
>>    or: git stash drop [-q|--quiet] [<stash>]
>>    or: git stash ( pop | apply ) [--index] [-q|--quiet] [<stash>]
>>    or: git stash branch <branchname> [<stash>]
>>    or: git stash [save [--patch] [-k|--[no-]keep-index] [-q|--quiet]
>>                        [-u|--include-untracked] [-a|--all] [<message>]]
>>    or: git stash clear
>> [volhovm at avishai:~/code/testGit]$ echo $?
>> 1
>> ```
>>
>> I used strace to discover what's going on and it appeared that `git
>> rebase aoeuaoeuaoeu` with and without `gettextWithExpat` installed gives
>> almost identical output (differs in addresses only), except for the last
>> ~6 lines, which are:
>>
>> With `gettextExpat` installed:
>> ```
>> read(4, "", 1)                          = 0
>> close(4)                                = 0
>> wait4(13438, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 13438
>> --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13438,
>> si_uid=1000, si_status=0, si_utime=0, si_stime=0} ---
>> exit_group(0)                           = ?
>> +++ exited with 0 +++
>> ```
>>
>> Without:
>> ```
>> read(4, "", 1)                          = 0
>> close(4)                                = 0
>> wait4(13271, fatal: Needed a single revision
>> invalid upstream aoeuaoeu
>> [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0, NULL) = 13271
>> --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13271,
>> si_uid=1000, si_status=1, si_utime=0, si_stime=0} ---
>> exit_group(1)                           = ?
>> +++ exited with 1 +++
>> ```
>>
>> I wonder if this issue is related to nixOS or git. What are your
>> thoughts about it?
>>
>> --
>> Volkhov Mikhail
>> M3#38 IFMO study group 17'
>> Computer Technologies Department
>> _______________________________________________
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>> nix-dev at lists.science.uu.nl
>> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>>
>
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