[Nix-dev] GCC in pkgs.buildEnv.paths

[Pavel Chuprikov]

Hi,

I've compared derivations of gcc-wrappers and here what I got:

pkgs.gcc vs pkgs.testgcc
~~~~~~~~~~~~~~~~
1c1
< ('out', '/nix/store/agf8fk4xj2aqr3jccfcypqsmvkz3smn8-gcc-wrapper-4.8.2',
'', '')
---
> ('out', '/nix/store/nxzf150liimxqdz0f105kg5vsbcd9c75-gcc-wrapper-4.8.2',
'', '')
3,8c3,9
< ('/nix/store/884c7h4gi7xf2vpyfp1lybqxvkf644m8-stdenv-linux-boot.drv',
['out'])
< ('/nix/store/8hwk0axdnf9c2d61fzs3cn54m2d543y9-gcc-4.8.2.drv', ['out'])
< ('/nix/store/cn5p5k04np1v3vpqimgx2f8012wv2ljw-glibc-2.19.drv', ['out'])
< ('/nix/store/qi7wdh1qyvd58ip61dn8d58v2awagbhj-coreutils-8.21.drv',
['out'])
< ('/nix/store/xirq1m6mi5lw61v33mnv3j13hy9bwnwx-bootstrap-tools.drv',
['out'])
< ('/nix/store/yykyb9sf6axlm78f4apk0mabicnv8mnr-binutils-2.23.1.drv',
['out'])
---
> ('/nix/store/38aab2xbj5vpk09c218rdz4jy8xfgjs9-glibc-2.19.drv', ['out'])
> ('/nix/store/5ncp7pw6nc3yhxny8mfks17jngxz9qns-gcc-4.8.2.drv', ['out'])
> ('/nix/store/7z26jxbwkc5hx9gwrj47dhcpfxwg5b67-binutils-2.23.1.drv',
['out'])
> ('/nix/store/cz26wrhr8ddk09yffy67xjsaz339byj2-bash-4.2-p45.drv', ['out'])
> ('/nix/store/f3ssylga2wkh9k3bydmaajzz6wifms2w-zlib-1.2.8.drv', ['out'])
> ('/nix/store/kyai48rvwcaynnp0qywcg89yp0l5dzrq-stdenv.drv', ['out'])
> ('/nix/store/q8ng53dv1lccmg4a2jcj8540ifszi65j-coreutils-8.21.drv',
['out'])
19c20
< /nix/store/c8lg3m5mr246fvlx6xsrxa0sykv4l9pg-bootstrap-tools/bin/sh
---
> /nix/store/p0vd3ydvxplbpjffkpblwj5dahcmp9ri-bash-4.2-p45/bin/bash
23c24
< ('binutils',
'/nix/store/xjvdpqgn2kd4rg0k30z020kxylvlbpx0-binutils-2.23.1')
---
> ('binutils',
'/nix/store/lc4961ic7mc3bsl7njhzm4qxawhvj2bq-binutils-2.23.1')
25,26c26,27
< ('builder',
'/nix/store/c8lg3m5mr246fvlx6xsrxa0sykv4l9pg-bootstrap-tools/bin/sh')
< ('coreutils',
'/nix/store/xdswdgz11w9lm9n9bzb6spl7dj45s2x2-coreutils-8.21')
---
> ('builder',
'/nix/store/p0vd3ydvxplbpjffkpblwj5dahcmp9ri-bash-4.2-p45/bin/bash')
> ('coreutils',
'/nix/store/w15x8z4g200r6syxnc2wyq93gizbg7dv-coreutils-8.21')
28c29
< ('gcc', '/nix/store/9fb027n5a2lf9qwpb98v77iycqq552pf-gcc-4.8.2')
---
> ('gcc', '/nix/store/1rymlfk7y0pjwmhh6ngp0azw3173v5a0-gcc-4.8.2')
39c40
< ('libc', '/nix/store/pdskwizjw8ar31hql2wjnnx6g0s6xc50-glibc-2.19')
---
> ('libc', '/nix/store/gbymvr6n95scxf6mzkgfzywydsjskmsm-glibc-2.19')
45c46
< ('out', '/nix/store/agf8fk4xj2aqr3jccfcypqsmvkz3smn8-gcc-wrapper-4.8.2')
---
> ('out', '/nix/store/nxzf150liimxqdz0f105kg5vsbcd9c75-gcc-wrapper-4.8.2')
50,51c51,52
< ('shell',
'/nix/store/p0vd3ydvxplbpjffkpblwj5dahcmp9ri-bash-4.2-p45/bin/bash')
< ('stdenv',
'/nix/store/hbw5c0hqrg3mv7sa2aic7s9yvrcwjixz-stdenv-linux-boot')
---
> ('shell',
'/nix/store/4s36p56jq79zhnyplrhqjscaqbw0x3c8-bash-4.2-p45/bin/bash')
> ('stdenv', '/nix/store/rq16hrf7gy426a6lcnf6pa9746sxnbgc-stdenv')
55c56
< ('zlib', '')
---
> ('zlib', '/nix/store/kksws74v0v0jf6dl6f5fhw24dygzairc-zlib-1.2.8')
~~~~~~~~~~~

I noticed that a few inputs are different in their names ('builder',
'stdenv', 'zlib').

--
Pavel




On Sun, May 25, 2014 at 10:25 AM, Kirill Elagin <kirelagin at gmail.com> wrote:

> Hi Peter,
>
> Just for the record: this issue is not due to Pavel's misconfiguration, I
> can confirm the behaviour he described.
>
> In my case it is
>
> ~~~~~
> % nix-env --dry-run -iA nixos.pkgs.gcc
> (dry run; not doing anything)
> installing `gcc-wrapper-4.8.2'
> % readlink -f $(which gcc)
> /nix/store/agf8fk4xj2aqr3jccfcypqsmvkz3smn8-gcc-wrapper-4.8.2/bin/gcc
> ~~~~~~~~~~~
>
> (I don't know how to force `nix-env` to print computed hash of an already
> present package.)
>
> ~~~~~~
> % nix-env --dry-run -iA nixos.pkgs.testgcc
> (dry run; not doing anything)
> installing `testgcc'
>
> these derivations will be built:
>   /nix/store/41nacbfpr8jzsk3k03jjlqb2r2xis5gf-gcc-wrapper-4.8.2.drv
>   /nix/store/7z26jxbwkc5hx9gwrj47dhcpfxwg5b67-binutils-2.23.1.drv
>   /nix/store/di54xrm0pkrs67fv61g7j53qhsm8vm55-testgcc.drv
> these paths will be fetched (13.86 MiB download, 79.74 MiB unpacked):
>   /nix/store/1rymlfk7y0pjwmhh6ngp0azw3173v5a0-gcc-4.8.2
> ~~~~~~~~~~~~~~
>
> So please note that hashes don't much not only for `gcc-wrapper` and
> `binutils`, but also for `gcc` and,
> strangely enough, that another `gcc` is available on the channel!
>
> ~~~~~~~~
> % nix-store -q -R $(which gcc) | grep gcc-4
> /nix/store/9fb027n5a2lf9qwpb98v77iycqq552pf-gcc-4.8.2
> ~~~~~~~~~~~
>
> Probably, comparing inputs of `gcc`'s with given hashes might shed some
> light on the case.
>
> Answering your questions:
>
> ~~~~~~
> % nix-env -qaP | grep testgcc
> nixos.pkgs.testgcc
> testgcc
> ~~~~~~~
>
> And removing `~/.nix-defexpr/channels` doesn't change anything.
>
>
>
> --
> Кирилл Елагин
>
>
> On Sun, May 25, 2014 at 1:55 AM, Peter Simons <simons at cryp.to> wrote:
>
>> Hi Pavel,
>>
>> could you please restore original ~/.nixpkgs/config.nix file you were
>> using when you started this thread and run:
>>
>>   $ nix-env -qaP \* | grep testgcc
>>
>> What is the output of that command?
>>
>> Afterwards, please delete the symlink ~/.nix-defexpr/channels (so that
>> ~/.nix-defexpr/channels_root is the only remaining entry in that
>> directory). Then, please run:
>>
>>   $ nix-env -iA nixos.pkgs.testgcc --dry-run
>>
>> Does the command still try to re-build gcc, glibc, etc.?
>>
>> Take care,
>> Peter
>>
>> _______________________________________________
>> nix-dev mailing list
>> nix-dev at lists.science.uu.nl
>> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>>
>
>
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