34 lines
1.0 KiB
Bash
34 lines
1.0 KiB
Bash
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# mantainer: Marc Weber (marco-oweber@gmx.de)
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#
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# example usage: add ghcPkgUtil to buildInputs then somewhere in buildPhase:
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#
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# createEmptyPackageDatabaseAndSetupHook
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# configure --with-package-db=$PACKAGE_DB
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# ... compile ghc library ...
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# add your library to propagatedBuildInputs instead of buildInputs
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# in all depending libraries
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# creates a setup hook
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# adding the package database
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# nix-support/package.conf to GHC_PACKAGE_PATH
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# if not already contained
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setupHookRegisteringPackageDatabase(){
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ensureDir $out/nix-support;
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local pkgdb=$out/nix-support/package.conf
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cat >> $out/nix-support/setup-hook << EOF
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echo \$GHC_PACKAGE_PATH | grep -l $pkgdb &> /dev/null || \
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export GHC_PACKAGE_PATH=\$GHC_PACKAGE_PATH\${GHC_PACKAGE_PATH:+$PATH_DELIMITER}$pkgdb;
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EOF
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}
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# create an empty package database in which the new library can be registered.
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createEmptyPackageDatabaseAndSetupHook(){
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ensureDir $out/nix-support;
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PACKAGE_DB=$out/nix-support/package.conf;
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echo '[]' > $PACKAGE_DB";
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setupHookRegisteringPackageDatabase
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}
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