GNU bug report logs - #54820
build-systems: inconsistent use of standard-packages

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Hartmut Goebel <h.goebel <at> crazy-compilers.com>
To: bug-guix <bug-guix <at> gnu.org>
Subject: build-systems: inconsistent use of standard-packages
Date: Sat, 9 Apr 2022 18:24:55 +0200

Build-systems are adding „@(standard-packages)“ inconsistently to 
„host-packages“ or „build-packages”. For one developing a new 
build-system it is not clear which is the correct form.

Some (e.g. texlive, ruby, python) add it to „host-inputs“)

         (host-inputs `(,@(if source
                              `(("source" ,source))
                              '())
                        ,@inputs
                         ;; Keep the standard inputs of 'gnu-build-system'.
                         ,@(standard-packages)))

Some add it to „build-inputs (e.g. gnu, cmake, qt):

    (build-inputs `(,@(if source
                          `(("source" ,source))
                          '())
                    ,@`(("cmake" ,cmake))
                    ,@native-inputs
                    ,@(if target
                          ;; Use the standard cross inputs of
                          ;; 'gnu-build-system'.
                          (standard-cross-packages target 'host)
                          '())
                    ;; Keep the standard inputs of 'gnu-build-system'.
                    ,@(standard-packages)))


Expected:

Either

a) review and align the code of all build-systems, or

b) add a comment to every build-system briefly explaining why in host 
resp. build-packages here,

c) document how and why to use which form.

Since as far as I've seen there is no detailed „How to write a 
build-system“, developers (well, me :-) tend to develop new 
build-systems based on existing ones. Thus (a) or (b) seem the easier 
and quicker solution.


Reproduce:

grep -A5 -B5 standard-packages guix/build-system/*.scm

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel <at> crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |

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