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authorLudovic Courtès <ludo@gnu.org>2023-06-05 23:41:37 +0200
committerLudovic Courtès <ludo@gnu.org>2023-06-14 22:54:30 +0200
commite4259d4e9e3251e4c4b45d1cce4008ac32b504c8 (patch)
tree7baa5cee009351303353cdd2b4b4183fa2501259 /gnu.scm
parent35c27ec5eedfe8ea4fc653bef0bf213c1a58e7a2 (diff)
downloadguix-e4259d4e9e3251e4c4b45d1cce4008ac32b504c8.tar.gz
packages: 'package-transitive-supported-systems' detects cycles.
With this change, commands such as 'guix build' or 'guix package' report
obvious package-level cycles upfront.  Derivation-level cycles are not
detected.

* guix/packages.scm (&package-cyclic-dependency-error): New condition
type.
(package-transitive-supported-systems): Define 'visited', check it, and
parameterize it.
* guix/ui.scm (call-with-error-handling): Handle
'&package-cyclic-dependency-error'.
* tests/packages.scm ("package-transitive-supported-systems detects
cycles"): Add test.
Diffstat (limited to 'gnu.scm')
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