GNU bug report logs - #73948
[PATCH 0/2] 'derivation-build-plan' returns builds in topological order

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Message #11 received at 73948 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: 73948 <at> debbugs.gnu.org
Cc: Ludovic Courtès <ludo <at> gnu.org>
Subject: [PATCH 2/2] ui: ‘show-what-to-build’ displays builds in topological order.
Date: Tue, 22 Oct 2024 15:22:10 +0200

That gives something like:

  $ ./pre-inst-env guix build vim --no-grafts --no-substitutes -n
  The following derivations would be built:
    /gnu/store/…-tcsh-6.24.01.tar.gz.drv
    /gnu/store/…-tcsh-6.24.01.tar.zst.drv
    /gnu/store/…-tcsh-6.24.01.drv
    /gnu/store/…-vim-9.1.0744-checkout.drv
    /gnu/store/…-vim-9.1.0744.drv

… with the derivation(s) being asked for coming last.

* guix/ui.scm (show-what-to-build): Reverse ‘build/full’ before folding it.

Change-Id: Ic0da9f4f8a58c7ed5e2d10f6ec2226f0865aed75
---
 guix/ui.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/guix/ui.scm b/guix/ui.scm
index 966f0611f6..447550635c 100644
--- a/guix/ui.scm
+++ b/guix/ui.scm
@@ -1077,7 +1077,7 @@ (define* (show-what-to-build store drv
                                          #:hook ,hook
                                          #:build ,(cons file build))))))))
                               '(#:graft () #:hook () #:build ())
-                              build/full)
+                              (reverse! build/full)) ;preserve ordering
                    ((#:graft graft #:hook hook #:build build)
                     (values graft hook build)))))
     (define installed-size
-- 
2.46.0

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