Preserve per-component build info until pretty-printing #709
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alexfmpe wants to merge 2 commits intoNixOS:masterfrom
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Preserve per-component build info until pretty-printing #709alexfmpe wants to merge 2 commits intoNixOS:masterfrom
alexfmpe wants to merge 2 commits intoNixOS:masterfrom
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alexfmpe
commented
Mar 19, 2026
| , "tasty-discover" | ||
| , "hsx2hs" | ||
| , "markdown-unlit" | ||
| ] |
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I mostly rewrote this because I was having trouble getting the lenses to play nice with the subsequent change
alexfmpe
commented
Mar 19, 2026
| | otherwise = True | ||
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| convertBuildInfo :: Cabal.BuildInfo -> Nix.BuildInfo | ||
| convertBuildInfo Cabal.BuildInfo {..} | not buildable = mempty |
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Surprisingly this line seems to have no effect, because finalizePD silently drops buildable: false components
alexfmpe
commented
Mar 19, 2026
| ] | ||
| where | ||
| pPrintBuildInfo' :: String -> [(BuildInfo, Bool)] -> Doc | ||
| pPrintBuildInfo' name = pPrintBuildInfo name . foldMap fst . filter snd |
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The filter snd coincidentally doesn't seem to have effect due to the way finalizePD works (see below comment), but I think it'd be very confusing not having it
alexfmpe
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Standalone mergeable step from my work on preserving cabal conditionals into nix.
Since that means that whether a component is
buildablemight only be determinable at eval time, we can't blindly fold them.The first commit mostly cleans up stuff so the commit with the actual change can be simpler.