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Subject: |
[PATCH 0/4] Catch collisions at profile creation time |
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Date: |
Wed, 7 Jun 2017 11:22:42 +0200 |
Hello Guix!
These patches allow us to catch problematic collisions when computing
a profile derivation. As we know, the profile builder often spits out
a number of warnings about collisions but that is not very useful because
users cannot distinguish the problematic cases from the harmless cases
(an example of a harmless case is when GDB and Binutils provide an
almost-identical .info file twice).
Concretely, what happens is something like this:
--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix package -i guile-cairo -n
The following package would be upgraded:
guile-cairo 1.4.1 → 1.4.1
/gnu/store/k9p7j9ijb9vfkmvcgr4vqy20vkg6nsbg-guile-cairo-1.4.1
guix package: error: profile contains conflicting entries for guile-cairo:out
guix package: error: first entry: address@hidden:out
/gnu/store/k9p7j9ijb9vfkmvcgr4vqy20vkg6nsbg-guile-cairo-1.4.1
guix package: error: second entry: address@hidden:out
/gnu/store/x0jp2q06snx7skrqdmlkn0r5fhyvvn00-guile-cairo-1.4.1
guix package: error: ... propagated from address@hidden
$ ./pre-inst-env guix package -i guile-cairo guile-rsvg guile-present -n
The following packages would be upgraded:
guile-cairo 1.4.1 → 1.4.1
/gnu/store/k9p7j9ijb9vfkmvcgr4vqy20vkg6nsbg-guile-cairo-1.4.1
guile-rsvg 2.18.1 → 2.18.1
/gnu/store/xp8wcyvhplsv45gkj9r4n6zmcdancfkn-guile-rsvg-2.18.1
guile-present 0.3.0 → 0.3.0
/gnu/store/qwk8fzijyllaxv4vw114gqzix1qvfmp2-guile-present-0.3.0
guix package: error: profile contains conflicting entries for guile-cairo:out
guix package: error: first entry: address@hidden:out
/gnu/store/k9p7j9ijb9vfkmvcgr4vqy20vkg6nsbg-guile-cairo-1.4.1
guix package: error: second entry: address@hidden:out
/gnu/store/x0jp2q06snx7skrqdmlkn0r5fhyvvn00-guile-cairo-1.4.1
guix package: error: ... propagated from address@hidden
$ ./pre-inst-env guix package -i guile-cairo guile-rsvg guile-charting
guile-present -n
The following packages would be upgraded:
guile-cairo 1.4.1 → 1.4.1
/gnu/store/k9p7j9ijb9vfkmvcgr4vqy20vkg6nsbg-guile-cairo-1.4.1
guile-rsvg 2.18.1 → 2.18.1
/gnu/store/xp8wcyvhplsv45gkj9r4n6zmcdancfkn-guile-rsvg-2.18.1
guile-charting 0.2.0 → 0.2.0
/gnu/store/11368xymyhk4zz8zwvbdmp5dzcl0vxvc-guile-charting-0.2.0
guile-present 0.3.0 → 0.3.0
/gnu/store/qwk8fzijyllaxv4vw114gqzix1qvfmp2-guile-present-0.3.0
substitute: updating list of substitutes from 'https://bayfront.guixsd.org'...
100.0%
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'...
100.0%
The following derivations would be built:
/gnu/store/r361w7fa57vm7js8lk4bnsc7lwv2avby-profile.drv
/gnu/store/l5hf8cg5fx6par39659ihkhdgp3kls1n-xdg-mime-database.drv
/gnu/store/k8jmvc8yjk3qg8xbgcfgpgngq7vkygld-info-dir.drv
/gnu/store/ivnqmwwxwric5lhw5gqnpkxq6gbzj23i-fonts-dir.drv
/gnu/store/hdaasxvm64h06xxzwrnx2gch981h88wf-ca-certificate-bundle.drv
/gnu/store/axzp9vj4h59nnbmf6ccaajb9qq97xwb8-gtk-icon-themes.drv
/gnu/store/8dkb7k53x1c0zhb9qdgrgr53j5j3biwf-gtk-im-modules.drv
/gnu/store/v2w6qpf0kk2d70wv01f3ln1v758sgzqm-manual-database.drv
--8<---------------cut here---------------end--------------->8---
As in the example above, conflicts may arise when doing a partial
upgrade of a profile, because this is a situation where you can easily
end up with conflicting versions of a given package. It’s much less
likely when using ‘guix package -m’ or similar.
An open question is whether there are commonly used combinations of
packages that trigger conflicts. I haven’t had any problems with my
profile (with 234 packages) nor with my GuixSD config, but I encourage
you to test it on your profile!
Thoughts?
Ludo’.
Ludovic Courtès (3):
profiles: Represent propagated inputs as manifest entries.
profiles: Manifest entries keep a reference to their parent entry.
profiles: Catch and report collisions in the profile.
guix/profiles.scm | 241 +++++++++++++++++++++++++++++++++++++++++------------
guix/ui.scm | 27 ++++++
tests/profiles.scm | 87 +++++++++++++++++++
3 files changed, 301 insertions(+), 54 deletions(-)
--
2.13.0
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