[Nix-dev] gitFetchPrivate on NixOS

[Ashley Gillman]

Thanks Zimbatm,

Actually I don't think the issue is the socket (yet). For example, I get
exactly the same error when just calling `nix-shell -I
ssh-config-file=$HOME/.ssh/config`. The current "wall" I think is either
that config file or the referenced id_rsa file, but the error indicates its
the config file itself. I have tried `chmod o+rw` on the file, and with
group (`chmod g+rw` and `chgrp`ing to nixbld), but to no avail.

I should mention also, I do not have my heart set on gitFetchPrivate. If
there is another way to access a remote (BitBucket) server requiring
credentials, that would be great. Although pulling each manually and using
a local file path is not preferred.

Cheers,
Ash

On Wed, Jun 15, 2016 at 10:07 PM, zimbatm <zimbatm at zimbatm.com> wrote:

> Hi,
>
> Yes the difference is that the build user is nixbld[1-9]. Also the SSH
> agent doesn't allow other users to access to the socket.
>
> Sorry I don't know the solution. You could maybe build a bridge on the
> socket using `socat` to hide the caller's user.
>
> On Wed, 15 Jun 2016, 11:57 Ashely Gillman, <gillmanash at gmail.com> wrote:
>
>> Hi all,
>> I have been attempting to use gitFetchPrivate to fetch from a private
>> bitbucket repo over SSH, on both Ubuntu running Nix and on NixOS. I am able
>> to get the setup working on Ubuntu.
>>
>> - Set up SSH-Agent the usual way.
>> - Ensure that `git clone ssh://git@bitbucket.domain.com:<port>/<user>/<repo>.git`
>> works, it does
>> - Use `nix-shell -I ssh-config-file=$HOME/.ssh/config -I
>> ssh-auth-sock=$SSH_AUTH_SOCK`, with a local shell.nix specifying
>> requirements
>>
>> However, I am unable to repeat the process on a NixOS machine.
>>
>>     gil at gil-nixos:~/proj/pylx $ git clone ssh://git@bitbucket.
>> <DOMAIN>:7999/~<USER>/milx-view.git
>>     <This works>
>>
>>     gil at gil-nixos:~/proj/pylx $ nix-shell -I
>> ssh-config-file=$HOME/.ssh/config -I ssh-auth-sock=$SSH_AUTH_SOCK
>>     these derivations will be built:
>>       /nix/store/48cz61di3gf6fpkydgri74h5i2s8qh3h-vtk-qvtk-5.10.1.drv
>>       /nix/store/pcj22pnchg10bq63a32jcc53l75cy8z1-boost-1.59.0.drv
>>       /nix/store/sb7xc3pan2h7n1qdh94ynblb9cv12a3p-milx-view-585a819.drv
>>       /nix/store/dzh8jzl90ghsl0l71p9v2zqzh9wn2ngb-milx-view.drv
>>     building path(s)
>> ‘/nix/store/603gs7mcgpf7cnyv3k2bkxk1kbj4smbq-boost-1.59.0’,
>> ‘/nix/store/q26zzdzy5zngyxyah8fhqmnqwbmz4gl4-boost-1.59.0-lib’,
>> ‘/nix/store/zggqsmrh9l70yrcdagmgqjmv8i6a9rls-boost-1.59.0-dev’
>>     building path(s)
>> ‘/nix/store/ra27851hlszq1k0n9zfa14xwhxqvn8zs-milx-view-585a819’
>>     building path(s)
>> ‘/nix/store/j70pal3svpcip7xv21bxf5xy2c4chl84-vtk-qvtk-5.10.1’
>>     exporting ssh://git@bitbucket.<DOMAIN>:7999/~<USER>/milx-view.git
>> (rev 585a8195804) into
>> /nix/store/ra27851hlszq1k0n9zfa14xwhxqvn8zs-milx-view-585a819
>>     Initialized empty Git repository in
>> /nix/store/ra27851hlszq1k0n9zfa14xwhxqvn8zs-milx-view-585a819/.git/
>>     Can't open user config file /home/gil/.ssh/config: Permission denied
>>     fatal: Could not read from remote repository.
>>
>>     Please make sure you have the correct access rights
>>     and the repository exists.
>>     unpacking sources
>>     unpacking source archive
>> /nix/store/cdz3wd9r8vlnp193kv091pal401mg9kc-boost_1_59_0.tar.bz2
>>     Can't open user config file /home/gil/.ssh/config: Permission denied
>>     fatal: Could not read from remote repository.
>>
>>     Please make sure you have the correct access rights
>>     and the repository exists.
>>     Unable to checkout 585a8195804 from ssh://git@bitbucket.
>> <DOMAIN>:7999/~<USER>/milx-view.git.
>>     builder for
>> ‘/nix/store/sb7xc3pan2h7n1qdh94ynblb9cv12a3p-milx-view-585a819.drv’ failed
>> with exit code 1
>>     cannot build derivation
>> ‘/nix/store/dzh8jzl90ghsl0l71p9v2zqzh9wn2ngb-milx-view.drv’: 1 dependencies
>> couldn't be built
>>     error: build of
>> ‘/nix/store/dzh8jzl90ghsl0l71p9v2zqzh9wn2ngb-milx-view.drv’ failed
>>     /run/current-system/sw/bin/nix-shell: failed to build all dependencies
>>
>> With the relevant line being:
>>     Can't open user config file /home/gil/.ssh/config: Permission denied
>>
>> Probably a nixbld user is trying to access this? I am not actually sure
>> if my nixpkgs are built by my user or by nixbld. How can I tell? `cat
>> /etc/passwd` indicates that the nixbld users exist.
>>
>> I have attempted to follow instructions for setting up gitFetchPrivate
>> for multi-user installations (but again, not even sure this is what I have
>> - I just installed the simplest way), but to no avail (although the
>> instructions are somewhat unclear).
>>
>> Thanks for any help,
>> Ashley Gillman (Ash)
>> _______________________________________________
>> nix-dev mailing list
>> nix-dev at lists.science.uu.nl
>> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>>
>
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