Backport #10483: fix cabal install --program-suffix/prefix (fix #10290 and #10476)
#10510
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…10483) * fix cabal install --program-suffix/prefix (fix #10290 and #10476) When checking for existing installations, cabal would not account for an affix (suffix or prefix). So, if you had a `hello` binary installed, installing a second one with a non-empty affix (a perfectly legal operation) would fail. The reason seemed to be a typo in 09c04e9, which passed the arguments to the Symlink structure in a wrong order. When failing to install a binary because of an existing one, cabal would report suffix-less existing target even if a suffix was set. * Add regression tests for overwrite policies and porgram-affixes Add regression tests for the `program-prefix` and `program-suffix` flags combined with the overwrite-policy. In short, the overwrite-policy needs to take potential program affixes into account when deciding whether it will need to overwrite a program path during installation. --------- Co-authored-by: Fendor <fendor@posteo.de> (cherry picked from commit ee3c313)
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@Kleidukos wanted to test the original PR , so I'm not merging the backport right away and rather requesting a review... |
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FWIW I'd've added tests to the original PR before merging. ETA: oh, sorry, it has one (slow, apparently). Proceed, then. |
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Merging based on this #10483 (comment) |
ulysses4ever
approved these changes
Nov 5, 2024
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#10290 shows: when checking for existing installations, cabal would not account for an affix (suffix or prefix). So, if you had a
hellobinary installed, installing a second one with a non-empty affix (a perfectly legal operation) would fail.The reason seemed to be a typo in 09c04e9, which passed the arguments to the Symlink structure in a wrong order.
#10476 shows: when failing to install a binary because of an existing one, cabal would report suffix-less existing target even if a suffix was set.
This turned out to be a little issue in pretty printing.
I haven't gotten around to adding tests, sadly.
QA notes
Try to check that both #10290 and #10476 don't reproduce with this patch (they both have clear instructions for reproduction).
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This is an automatic backport of pull request #10483 done by [Mergify](https://mergify.com).