forked from mirrors/nixpkgs
54 lines
1.7 KiB
Nix
54 lines
1.7 KiB
Nix
{ lib, stdenv }:
|
|
|
|
{ paths, disabledDefaultBackends ? [] }:
|
|
|
|
with lib;
|
|
let
|
|
installSanePath = path: ''
|
|
if [ -e "${path}/lib/sane" ]; then
|
|
find "${path}/lib/sane" -maxdepth 1 -not -type d | while read backend; do
|
|
symlink "$backend" "$out/lib/sane/$(basename "$backend")"
|
|
done
|
|
fi
|
|
|
|
if [ -e "${path}/etc/sane.d" ]; then
|
|
find "${path}/etc/sane.d" -maxdepth 1 -not -type d | while read conf; do
|
|
name="$(basename $conf)"
|
|
if [ "$name" = "dll.conf" ] || [ "$name" = "saned.conf" ] || [ "$name" = "net.conf" ]; then
|
|
cat "$conf" >> "$out/etc/sane.d/$name"
|
|
else
|
|
symlink "$conf" "$out/etc/sane.d/$name"
|
|
fi
|
|
done
|
|
fi
|
|
|
|
if [ -e "${path}/etc/sane.d/dll.d" ]; then
|
|
find "${path}/etc/sane.d/dll.d" -maxdepth 1 -not -type d | while read conf; do
|
|
symlink "$conf" "$out/etc/sane.d/dll.d/$(basename $conf)"
|
|
done
|
|
fi
|
|
'';
|
|
disableBackend = backend: ''
|
|
grep -q '${backend}' $out/etc/sane.d/dll.conf || { echo '${backend} is not a default plugin in $SANE_CONFIG_DIR/dll.conf'; exit 1; }
|
|
substituteInPlace $out/etc/sane.d/dll.conf --replace '${backend}' '# ${backend} disabled in nixos config'
|
|
'';
|
|
in
|
|
stdenv.mkDerivation {
|
|
name = "sane-config";
|
|
dontUnpack = true;
|
|
|
|
installPhase = ''
|
|
function symlink () {
|
|
local target=$1 linkname=$2
|
|
if [ -e "$linkname" ]; then
|
|
echo "warning: conflict for $linkname. Overriding $(readlink $linkname) with $target."
|
|
fi
|
|
ln -sfn "$target" "$linkname"
|
|
}
|
|
|
|
mkdir -p $out/etc/sane.d $out/etc/sane.d/dll.d $out/lib/sane
|
|
''
|
|
+ (concatMapStrings installSanePath paths)
|
|
+ (concatMapStrings disableBackend disabledDefaultBackends);
|
|
}
|