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nixpkgs/pkgs/games/steam/build-wrapped.sh

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source $stdenv/setup
outp=$out/lib/steam-runtime
buildDir() {
paths="$1"
pkgs="$2"
for pkg in $pkgs; do
echo "adding package $pkg"
for path in $paths; do
if [ -d $pkg/$path ]; then
cd $pkg/$path
for file in *; do
found=""
for i in $paths; do
if [ -e "$outp/$i/$file" ]; then
found=1
break
fi
done
if [ -z "$found" ]; then
mkdir -p $outp/$path
ln -s "$pkg/$path/$file" $outp/$path
sovers=$(echo $file | perl -ne 'print if s/.*?\.so\.(.*)/\1/')
if [ ! -z "$sovers" ]; then
fname=''${file%.''${sovers}}
for ver in ''${sovers//./ }; do
found=""
for i in $paths; do
if [ -e "$outp/$i/$fname" ]; then
found=1
break
fi
done
[ -n "$found" ] || ln -s "$pkg/$path/$file" "$outp/$path/$fname"
fname="$fname.$ver"
done
fi
fi
done
fi
done
done
}
eval "$installPhase"