GNU bug report logs - #53162
’guix shell ghc@8.4’ downloads ghc@8.10

Previous Next

Full log

View this message in rfc822 format

From: zimoun <zimon.toutoune <at> gmail.com>
To: 53162 <at> debbugs.gnu.org
Subject: bug#53162: ’guix shell ghc <at> 8.4’ downloads ghc <at> 8.10
Date: Mon, 10 Jan 2022 17:15:55 +0100

Hi,

Using 3dcc74d, I get an unexpected behaviour.  First, all expected:

--8<---------------cut here---------------start------------->8---
$ guix build ghc <at> 8.10 -n
122,4 MB would be downloaded:
   /gnu/store/p8rk5cp1p4b2zky4zj1shfqb11qb5nmk-ghc-8.10.7-doc
   /gnu/store/i92h6i23rnvrvn7xva6w9x7gjkljmfws-ghc-8.10.7

$ guix build ghc <at> 8.4 -n
/gnu/store/5gp4k7ly1smhkx95rhq21nvxmyg687bv-ghc-8.4.4-doc
/gnu/store/wxfr2naibx3qpy4w243a7ga98mchf6g3-ghc-8.4.4
--8<---------------cut here---------------end--------------->8---

I have ghc <at> 8.4 in my local store, but not ghc <at> 8.10.  In addition, no
path between ghc <at> 8.4 and ghc <at> 8.10,

--8<---------------cut here---------------start------------->8---
$ guix graph --path ghc <at> 8.4 ghc <at> 8.10
guix graph: error: no path from 'ghc <at> 8.4.4' to 'ghc <at> 8.10.7'
--8<---------------cut here---------------end--------------->8---

Even, ghc <at> 8.4 is used in the bootstrap chain of ghc <at> 8.10,

--8<---------------cut here---------------start------------->8---
$ guix graph --path ghc <at> 8.10 ghc <at> 8.4
ghc <at> 8.10.7
ghc <at> 8.8.4
ghc <at> 8.6.5
ghc <at> 8.4.4
--8<---------------cut here---------------end--------------->8---

However, tandam!

--8<---------------cut here---------------start------------->8---
$ guix shell -C ghc <at> 8.4
The following derivation will be built:
   /gnu/store/rx0spryh76az0ll6ddy7f7hy8ykhglnh-profile.drv

117,7 MB will be downloaded
 ghc-8.10.7  112.3MiB                                                                                                         3.3MiB/s 00:01 [                  ]   1.9%  C-c C-c
--8<---------------cut here---------------end--------------->8---

From the profile.drv, the culprit is identified:
/gnu/store/…-ghc-package-cache.drv,

--8<---------------cut here---------------start------------->8---
Derive
([("out","/gnu/store/mcmwdg13f5rc9vdklgbmsn6h84bgdp3q-ghc-package-cache","","")]
 ,[("/gnu/store/8m7vppxy4l824yk4036iisk2zy7qzgcx-ghc-8.4.4.drv",["out"])
   ,("/gnu/store/bc5cm1g1b884nvgiysq8x0i0wxplkqhl-ghc-8.10.7.drv",["out"])
   ,("/gnu/store/m0nbbk3vgl637ibrz7z72r5v0dkswpi2-guile-3.0.7.drv",["out"])
   ,("/gnu/store/qcksap17gs36gpnjj3by4d7r7yxfq405-module-import-compiled.drv",["out"])]
 ,["/gnu/store/45dpf18lzvzs6sbmihifw6ch9p6y20yr-ghc-package-cache-builder","/gnu/store/4j2xcm5s0hvmpjm8fdbmb02ipvr6wyxn-module-import"]
 ,"x86_64-linux","/gnu/store/fidl08nms5v63lkqv627zibxpd85zxqb-guile-3.0.7/bin/guile",["--no-auto-compile","-L","/gnu/store/4j2xcm5s0hvmpjm8fdbmb02ipvr6wyxn-module-import","-C","/gnu/store/n7687sw6nkrhpjkdgysgz7baihzipgl0-module-import-compiled","/gnu/store/45dpf18lzvzs6sbmihifw6ch9p6y20yr-ghc-package-cache-builder"]
 ,[("allowSubstitutes","0")
   ,("guix properties","((type . profile-hook) (hook . ghc-package-cache))")
   ,("out","/gnu/store/mcmwdg13f5rc9vdklgbmsn6h84bgdp3q-ghc-package-cache")
   ,("preferLocalBuild","1")])
--8<---------------cut here---------------end--------------->8---


From my perspective, it is a bug from (guix profiles)
’ghc-package-cache-file’ which always includes ’ghc’, currently pointing
to ghc <at> 8.10.

--8<---------------cut here---------------start------------->8---
  (define ghc                                     ;lazy reference
    (module-ref (resolve-interface '(gnu packages haskell)) 'ghc))
--8<---------------cut here---------------end--------------->8---

Well, the fix is not jumping to my eyes.  If someone has an idea to
conditionally remove this reference to ’ghc’?


Cheers,
simon

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.