* bug#67221: Package identity transformation produces different derivation
@ 2023-11-16 3:56 Ulf Herrman
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From: Ulf Herrman @ 2023-11-16 3:56 UTC (permalink / raw)
To: 67221
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$ guix build --no-grafts --derivations -e \
'(begin
(use-modules (guix packages) (gnu packages gtk))
((package-mapping identity) cairo-sans-poppler))' \
-e '(@ (gnu packages gtk) cairo-sans-poppler)'
=>
/gnu/store/51hwf2mc2ig76a3nm86msv4z9az3s0j3-cairo-1.16.0.drv
/gnu/store/q78ziqcg2dvi2lzj18hzdld85bcydzwk-cairo-1.16.0.drv
Some interesting notes:
1. (package-mapping identity #:deep? #t) *does* produce the same
derivation.
2. bag->derivation's `delete-duplicates' call uses `input=?', but its
input objects in the second tuple position are all <gexp-input>s
produced by `expand-input'. Consequently, `input=?' will fall back
to using `equal?' instead of `derivation=?'. I don't know to what
extent this has to do with the observed bug.
- ulfvonbelow
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2023-11-16 3:56 bug#67221: Package identity transformation produces different derivation Ulf Herrman
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