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* manifest.scm - Howddya get specific commit 4 package?
@ 2022-01-11  0:18 Jacob Hrbek
  2022-01-13 19:19 ` Niklas Schmidt
  0 siblings, 1 reply; 2+ messages in thread
From: Jacob Hrbek @ 2022-01-11  0:18 UTC (permalink / raw)
  To: help-guix


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kreyren@leonid~$ cat ~/Repositories/RiXotStudio/25-env/freecad/manifest.scm
#!/usr/bin/env -S guix shell -m
!#

;;; Recipe to provide GNU Emacs through Guix

(use-modules
     (guix channels))

;; DNR-CI(Krey): Needs handling to keep the hash up-to-date
(list (channel
        (name 'guix)
         (url "https://git.savannah.gnu.org/git/guix.git")
         (commit
           "f1bfd9f1948a5ff336d737c0614b9a30c2bb3097")
         (introduction
           (make-channel-introduction
             "9edb3f66fd807b096b48283debdcddccfea34bad"
             (openpgp-fingerprint
               "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))

(specifications->manifest
     (list
       "freecad"
       ;; DEP(Krey): Used for working with openscad designs
       "openscad"))


I need FreeCAD 07c51f1b2ce62b1c770ffde8a7c40899a8abf846 -> How can i get 
it through manifest.scm without using guix install freecad 
--with-commit=freecad=07c51f1b2ce62b1c770ffde8a7c40899a8abf846 ?

-- 
-- Jacob Hrbek


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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: manifest.scm - Howddya get specific commit 4 package?
  2022-01-11  0:18 manifest.scm - Howddya get specific commit 4 package? Jacob Hrbek
@ 2022-01-13 19:19 ` Niklas Schmidt
  0 siblings, 0 replies; 2+ messages in thread
From: Niklas Schmidt @ 2022-01-13 19:19 UTC (permalink / raw)
  To: Jacob Hrbek; +Cc: help-guix

Hello Jacob,

I would like to point you to the section 2.1.5.3 Inheritance of the 
cookbook:
https://guix.gnu.org/cookbook/en/guix-cookbook.html#Inheritance

There it says:

   All unspecified fields are inherited from the parent package. This is
   very convenient to create alternative packages, for instance with
   different source, version or compilation options. 

So I usually create my own package module, specify a new package that 
inherits the package I'm interested in and give it another unique name, 
say my-freecad. Then I specify my-freecad in the manifest and use the -L 
or --load-path= flag with the file system path of own package module to 
invoke guix package, guix shell, and so on.

Hope that get's you somewhere.

To be exact, I have not used this technique for obtaining a package a 
specific commit, but for different versions. I see no reason it wouldn't 
work for this scenario as well, though.


Greetings
Niklas


On Tue, Jan 11, 2022 at 00:18:01 +0000, Jacob Hrbek wrote:
>I need FreeCAD 07c51f1b2ce62b1c770ffde8a7c40899a8abf846 -> How can i 
>get it through manifest.scm without using guix install freecad 
>--with-commit=freecad=07c51f1b2ce62b1c770ffde8a7c40899a8abf846 ?


^ permalink raw reply	[flat|nested] 2+ messages in thread

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2022-01-11  0:18 manifest.scm - Howddya get specific commit 4 package? Jacob Hrbek
2022-01-13 19:19 ` Niklas Schmidt

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