nixpkgs/pkgs/development/haskell-modules/hoogle.nix

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2015-01-23 00:10:08 +01:00
# Install not only the Hoogle library and executable, but also a local Hoogle
# database which provides "Source" links to all specified 'packages' -- or the
# current Haskell Platform if no custom package set is provided.
#
# It is intended to be used in config.nix similarly to:
#
# { packageOverrides = pkgs: rec {
#
# haskellPackages =
# let callPackage = pkgs.lib.callPackageWith haskellPackages;
# in pkgs.recurseIntoAttrs (pkgs.haskellPackages.override {
# extension = self: super: {
# hoogleLocal = pkgs.haskellPackages.hoogleLocal.override {
# packages = with pkgs.haskellPackages; [
# mmorph
# monadControl
# ];
# };
# };
# });
# }}
#
# This will build mmorph and monadControl, and have the hoogle installation
# refer to their documentation via symlink so they are not garbage collected.
{ stdenv, hoogle, rehoo
, ghc, packages ? [ ghc.ghc ]
}:
let
inherit (stdenv.lib) optional;
wrapper = ./hoogle-local-wrapper.sh;
in
stdenv.mkDerivation {
name = "hoogle-local-0.1";
buildInputs = [hoogle rehoo];
phases = [ "installPhase" ];
docPackages = packages;
installPhase = ''
if [ -z "$docPackages" ]; then
echo "ERROR: The packages attribute has not been set"
exit 1
fi
mkdir -p $out/share/hoogle/doc
export HOOGLE_DOC_PATH=$out/share/hoogle/doc
cd $out/share/hoogle
function import_dbs() {
find $1 -name '*.txt' | while read f; do
newname=$(basename "$f" | tr '[:upper:]' '[:lower:]')
if [[ -f $f && ! -f ./$newname ]]; then
cp -p $f ./$newname
hoogle convert -d "$(dirname $f)" "./$newname"
fi
done
}
for i in $docPackages; do
findInputs $i docPackages propagated-native-build-inputs
findInputs $i docPackages propagated-build-inputs
done
for i in $docPackages; do
if [[ ! $i == $out ]]; then
for docdir in $i/share/doc/*-ghc-*/* $i/share/doc/*; do
if [[ -d $docdir ]]; then
import_dbs $docdir
ln -sf $docdir $out/share/hoogle/doc
fi
done
fi
done
import_dbs ${ghc}/share/doc/ghc*/html/libraries
ln -sf ${ghc}/share/doc/ghc*/html/libraries/* $out/share/hoogle/doc
chmod 644 *.hoo *.txt
rehoo -j4 -c64 .
rm -fr downloads *.dep *.txt
mv default.hoo x || exit 0
rm -f *.hoo
mv x default.hoo || exit 1
if [ ! -f default.hoo ]; then
echo "Unable to build the default Hoogle database"
exit 1
fi
mkdir -p $out/bin
substitute ${wrapper} $out/bin/hoogle \
--subst-var out --subst-var-by shell ${stdenv.shell} \
--subst-var-by hoogle ${hoogle}
chmod +x $out/bin/hoogle
'';
meta = {
description = "A local Hoogle database";
platforms = ghc.meta.platforms;
hydraPlatforms = with stdenv.lib.platforms; none;
maintainers = with stdenv.lib.maintainers; [ ttuegel ];
};
}