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haskell / play-haskell

Haskell Playground
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Inclusion of Linear Haskell libraries #33

Closed Kleidukos closed 1 year ago

Kleidukos commented 1 year ago

Feature request

There have been requests to have Linear Haskell libraries available in the Playground.

tomsmeding commented 1 year ago

Thanks, makes sense that this should be in there.

This took some sleuthing: https://github.com/haskell/play-haskell/compare/9978b6dcb58bd308e68eb5d29336c8a915b6b203...93f442199ba5238088265bf5a5252af8a943560c

Symptom was that building text-2.0.2 failed because gcc couldn't find the <string> include, which is nonsense because the include file was there in the expected place. Turns out that gcc determines its include search path via heuristics (?) depending on where it finds itself, thus (since it's called as /bin/gcc by ghc) it matters whether /bin is a directory (like it was before my fixes) bound to /bin in the ubuntu base image, or a symlink to /usr/bin (as it indeed is in the base image). Hence the required changes in mkbuildscript.sh.