haskell-modules/lib: make postFixup more resilient
1. Putting the string on one line (instead of using a multiline string) means it is not ended with \n, which means if somebody wants to append more lines, they have to start it with \n or it will get concatenated to the `postFixup` here, so add \n. 2. Previously, ignoring `drv.postFixup` would throw away any `postFixup`s set in `drv`, which is not something we want. The extra empty line is a cute trick to prevent concatenating the code with any previous `postFixup` that doesn’t end in \n.
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@ -285,7 +285,11 @@ rec {
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enableLibraryProfiling = false;
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isLibrary = false;
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doHaddock = false;
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postFixup = "rm -rf $out/lib $out/nix-support $out/share/doc";
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postFixup = drv.postFixup or "" + ''
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# Remove every directory which could have links to other store paths.
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rm -rf $out/lib $out/nix-support $out/share/doc
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'';
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});
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/* Build a source distribution tarball instead of using the source files
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