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nixos/pipewire: Use formats.json, stricter typing, line breaks

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The upstream pipewire config is written in an almost, but not quite
JSON format. The parser accepts standard JSON, though, so we don't
need to write our file in the same nonstandard version.

The typing for all config options is changed from `types.attrs`, which
behaves poorly when the option is set from multiple locations, to the
formats.json-type.

Also, rewrite some very long one-liners for improved readability.
This commit is contained in:
talyz 2021-03-31 17:27:50 +02:00
commit 2a3c276b53
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2 changed files with 66 additions and 57 deletions
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56
nixos/modules/services/desktops/pipewire/pipewire.nix
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@ -4,6 +4,7 @@
with lib;
let
json = pkgs.formats.json {};
cfg = config.services.pipewire;
enable32BitAlsaPlugins = cfg.alsa.support32Bit
&& pkgs.stdenv.isx86_64
@ -29,24 +30,13 @@ let
pipewire-pulse = builtins.fromJSON (builtins.readFile ./pipewire-pulse.conf.json);
};
# Helpers for generating the pipewire JSON config file
mkSPAValueString = v:
if builtins.isList v then "[${lib.concatMapStringsSep " " mkSPAValueString v}]"
else if lib.types.attrs.check v then
"{${lib.concatStringsSep " " (mkSPAKeyValue v)}}"
else if builtins.isString v then "\"${lib.generators.mkValueStringDefault { } v}\""
else lib.generators.mkValueStringDefault { } v;
mkSPAKeyValue = attrs: map (def: def.content) (
lib.sortProperties
(
lib.mapAttrsToList
(k: v: lib.mkOrder (v._priority or 1000) "${lib.escape [ "=" ] k} = ${mkSPAValueString (v._content or v)}")
attrs
)
);
toSPAJSON = attrs: lib.concatStringsSep "\n" (mkSPAKeyValue attrs);
configs = {
client = recursiveUpdate defaults.client cfg.config.client;
client-rt = recursiveUpdate defaults.client-rt cfg.config.client-rt;
jack = recursiveUpdate defaults.jack cfg.config.jack;
pipewire = recursiveUpdate defaults.pipewire cfg.config.pipewire;
pipewire-pulse = recursiveUpdate defaults.pipewire-pulse cfg.config.pipewire-pulse;
};
in {
meta = {
@ -78,7 +68,7 @@ in {
config = {
client = mkOption {
type = types.attrs;
type = json.type;
default = {};
description = ''
Configuration for pipewire clients. For details see
@ -87,7 +77,7 @@ in {
};
client-rt = mkOption {
type = types.attrs;
type = json.type;
default = {};
description = ''
Configuration for realtime pipewire clients. For details see
@ -96,7 +86,7 @@ in {
};
jack = mkOption {
type = types.attrs;
type = json.type;
default = {};
description = ''
Configuration for the pipewire daemon's jack module. For details see
@ -105,7 +95,7 @@ in {
};
pipewire = mkOption {
type = types.attrs;
type = json.type;
default = {};
description = ''
Configuration for the pipewire daemon. For details see
@ -114,7 +104,7 @@ in {
};
pipewire-pulse = mkOption {
type = types.attrs;
type = json.type;
default = {};
description = ''
Configuration for the pipewire-pulse daemon. For details see
@ -187,11 +177,21 @@ in {
source = "${cfg.package}/share/alsa/alsa.conf.d/99-pipewire-default.conf";
};
environment.etc."pipewire/client.conf" = { text = toSPAJSON (recursiveUpdate defaults.client cfg.config.client); };
environment.etc."pipewire/client-rt.conf" = { text = toSPAJSON (recursiveUpdate defaults.client-rt cfg.config.client-rt); };
environment.etc."pipewire/jack.conf" = { text = toSPAJSON (recursiveUpdate defaults.jack cfg.config.jack); };
environment.etc."pipewire/pipewire.conf" = { text = toSPAJSON (recursiveUpdate defaults.pipewire cfg.config.pipewire); };
environment.etc."pipewire/pipewire-pulse.conf" = { text = toSPAJSON (recursiveUpdate defaults.pipewire-pulse cfg.config.pipewire-pulse); };
environment.etc."pipewire/client.conf" = {
source = json.generate "client.conf" configs.client;
};
environment.etc."pipewire/client-rt.conf" = {
source = json.generate "client-rt.conf" configs.client-rt;
};
environment.etc."pipewire/jack.conf" = {
source = json.generate "jack.conf" configs.jack;
};
environment.etc."pipewire/pipewire.conf" = {
source = json.generate "pipewire.conf" configs.pipewire;
};
environment.etc."pipewire/pipewire-pulse.conf" = {
source = json.generate "pipewire-pulse.conf" configs.pipewire-pulse;
};
environment.sessionVariables.LD_LIBRARY_PATH =
lib.optional cfg.jack.enable "/run/current-system/sw/lib/pipewire";