nixpkgs/pkgs/applications/video/mpv/wrapper.nix
2020-06-16 01:35:30 +02:00

84 lines
2.9 KiB
Nix

# Arguments that this derivation gets when it is created with `callPackage`
{ stdenv
, lib
, symlinkJoin
, makeWrapper
, youtube-dl
}:
# the unwrapped mpv derivation - 1st argument to `wrapMpv`
mpv:
let
# arguments to the function (called `wrapMpv` in all-packages.nix)
wrapper = {
extraMakeWrapperArgs ? [],
youtubeSupport ? true,
# a set of derivations (probably from `mpvScripts`) where each is
# expected to have a `scriptName` passthru attribute that points to the
# name of the script that would reside in the script's derivation's
# `$out/share/mpv/scripts/`.
scripts ? [],
extraUmpvWrapperArgs ? []
}:
let
binPath = lib.makeBinPath ([
mpv.luaEnv
] ++ lib.optionals youtubeSupport [
youtube-dl
] ++ lib.optionals mpv.vapoursynthSupport [
mpv.vapoursynth.python3
]);
# All arguments besides the input and output binaries (${mpv}/bin/mpv and
# $out/bin/mpv). These are used by the darwin specific makeWrapper call
# used to wrap $out/Applications/mpv.app/Contents/MacOS/mpv as well.
mostMakeWrapperArgs = lib.strings.escapeShellArgs ([ "--argv0" "'$0'"
# These are always needed (TODO: Explain why)
"--prefix" "LUA_CPATH" ";" "${mpv.luaEnv}/lib/lua/${mpv.lua.luaversion}/?.so"
"--prefix" "LUA_PATH" ";" "${mpv.luaEnv}/share/lua/${mpv.lua.luaversion}/?.lua"
] ++ lib.optionals mpv.vapoursynthSupport [
"--prefix" "PYTHONPATH" ":" "${mpv.vapoursynth}/lib/${mpv.vapoursynth.python3.sitePackages}"
] ++ lib.optionals (binPath != "") [
"--prefix" "PATH" ":" binPath
] ++ (lib.lists.flatten (map
# For every script in the `scripts` argument, add the necessary flags to the wrapper
(script:
[
"--add-flags"
# Here we rely on the existence of the `scriptName` passthru
# attribute of the script derivation from the `scripts`
"--script=${script}/share/mpv/scripts/${script.scriptName}"
]
) scripts
)) ++ extraMakeWrapperArgs)
;
umpvWrapperArgs = lib.strings.escapeShellArgs ([
"--argv0" "'$0'"
"--set" "MPV" "${placeholder "out"}/bin/mpv"
] ++ extraUmpvWrapperArgs)
;
in
symlinkJoin {
name = "mpv-with-scripts-${mpv.version}";
paths = [ mpv ];
buildInputs = [ makeWrapper ];
passthru.unwrapped = mpv;
postBuild = ''
# wrapProgram can't operate on symlinks
rm "$out/bin/mpv"
makeWrapper "${mpv}/bin/mpv" "$out/bin/mpv" ${mostMakeWrapperArgs}
rm "$out/bin/umpv"
makeWrapper "${mpv}/bin/umpv" "$out/bin/umpv" ${umpvWrapperArgs}
'' + lib.optionalString stdenv.isDarwin ''
# wrapProgram can't operate on symlinks
rm "$out/Applications/mpv.app/Contents/MacOS/mpv"
makeWrapper "${mpv}/Applications/mpv.app/Contents/MacOS/mpv" "$out/Applications/mpv.app/Contents/MacOS/mpv" ${mostMakeWrapperArgs}
'';
};
in
lib.makeOverridable wrapper