Dear,
On Wed, 28 Oct 2020 at 21:48, Luis Felipe <luis.felipe...@protonmail.com> wrote:
>> #+BEGIN_SRC sh :results output :exports both
>> time guix build --check $(guix gc -R $(guix gc --derivers $(readlink -f
>> ~/.guix-profile)) |grep xdg-mime-database.drv)
>> #+END_SRC
>
> I haven't run this command because I don't know what it does (how will
> it affect my profile?), but if you think the results from this command
> would be more useful than what I posted to issue #44053, please let me
> know and I'll run it.
The command will not affect your profile.
1. Get the real file of all the symlinks forest
$ readlink -f ~/.guix-profile
/gnu/store/z32aid8bjbz7ylwbjfh5x6lbg2g7fiv0-profile
2. Get the derivation that generated this file
$ guix gc --derivers /gnu/store/z32aid8bjbz7ylwbjfh5x6lbg2g7fiv0-profile
/gnu/store/wnjk3zsrw6s55hqj0qbbwhx635i5s6n0-profile.drv
3. Get all that it is used by the previous derivation
$ guix gc -R /gnu/store/wnjk3zsrw6s55hqj0qbbwhx635i5s6n0-profile.drv
/gnu/store/z41v36kbd8xa1l2ga2lsaa287yyk7wdb-nasm-2.14.02-guile-builder
/gnu/store/ich43zbavdqphzshfr5q5d00arissxa7-nasm-2.14.02.tar.xz.drv
/gnu/store/0rifkf1snq6fjz7l4dpg5j3i2wgj7gxp-nasm-2.14.02.drv
[...] a **lot** of items
/gnu/store/3x2kak8abb6z2klch72kfff2qxzv00pj-libpng-1.6.37
/gnu/store/3qrm6z400hh66x1kxd4zrbnkkylwcvg8-ca-certificate-bundle.drv
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
/gnu/store/1i57pf9q71sm7gpqkh15h677794y61dz-profile-builder
/gnu/store/0llx3y194278l5ksr4xh9kc64mh8nn8d-nss-certs-3.52.1
/gnu/store/wnjk3zsrw6s55hqj0qbbwhx635i5s6n0-profile.drv
4. Get only the one you are interested in
$ guix gc -R /gnu/store/wnjk3zsrw6s55hqj0qbbwhx635i5s6n0-profile.drv |
grep xdg-mime-database.drv
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
5. Build again this derivation (--check)
$ time guix build --check
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
The following profile hook will be built:
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
building XDG MIME database...
successfully built
/gnu/store/2jlwri28aycsayql85rfphrks721ny1k-xdg-mime-database.drv
/gnu/store/hrcj1h0hl9f6hm1akh682zj1mhpwbx4c-xdg-mime-database
real 0m3.493s
user 0m0.435s
sys 0m0.066s
Does it make sense?
Well from my POV, the information is #44053 is enough for now. :-)
All the best,
simon
