243 lines
8.5 KiB
Nix
243 lines
8.5 KiB
Nix
{ config, lib, options, pkgs, sane-lib, ... }:
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let
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cfg = config.sane.programs;
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# create a map:
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# {
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# "${pkgName}" = {
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# system = true|false;
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# user = {
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# "${name}" = true|false;
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# };
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# };
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# }
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# for every ${pkgName} in pkgSpecs.
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# `system = true|false` is a computed expression over all the other programs, as evaluated.
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solveDefaultEnableFor = pkgSpecs: lib.foldlAttrs (
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acc: pname: pval: (
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# add "${enableName}".system |= areSuggestionsEnabled pval
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# for each `enableName` in pval.suggestedPrograms.
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# do the same for `user` field.
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lib.foldl (acc': enableName: acc' // {
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"${enableName}" = let
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super = acc'."${enableName}";
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in {
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system = super.system || (pval.enableFor.system && pval.enableSuggested);
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user = super.user // lib.filterAttrs (_u: en: en && pval.enableSuggested) pval.enableFor.user;
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};
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}) acc pval.suggestedPrograms
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)
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) (mkDefaultEnables pkgSpecs) pkgSpecs;
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mkDefaultEnables = lib.mapAttrs (_pname: _pval: { system = false; user = {}; });
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defaultEnables = solveDefaultEnableFor cfg;
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pkgSpec = with lib; types.submodule ({ config, name, ... }: {
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options = {
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package = mkOption {
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type = types.nullOr types.package;
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description = ''
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package, or `null` if the program is some sort of meta set (in which case it much EXPLICITLY be set null).
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'';
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default =
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let
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pkgPath = lib.splitString "." name;
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in
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# package can be inferred by the attr name, allowing shorthand like
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# `sane.programs.nano.enable = true;`
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# this indexing will throw if the package doesn't exist and the user forgets to specify
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# a valid source explicitly.
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lib.getAttrFromPath pkgPath pkgs;
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};
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enableFor.system = mkOption {
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type = types.bool;
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default = defaultEnables."${name}".system;
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description = ''
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place this program on the system PATH
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'';
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};
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enableFor.user = mkOption {
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type = types.attrsOf types.bool;
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default = defaultEnables."${name}".user;
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description = ''
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place this program on the PATH for some specified user(s).
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'';
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};
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enabled = mkOption {
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type = types.bool;
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description = ''
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generated (i.e. read-only) value indicating if the program is enabled either for any user or for the system.
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'';
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};
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suggestedPrograms = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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list of other programs a user may want to enable alongside this one.
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for example, the gnome desktop environment would suggest things like its settings app.
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'';
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};
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enableSuggested = mkOption {
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type = types.bool;
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default = true;
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};
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mime.priority = mkOption {
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type = types.int;
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default = 100;
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description = ''
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program with the numerically lower priority takes precedence whenever two mime associations overlap.
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'';
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};
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mime.associations = mkOption {
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type = types.attrsOf types.str;
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default = {};
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description = ''
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mime associations. each entry takes the form of:
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"<mime type>" = "<launcher>.desktop"
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e.g.
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{
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"audio/flac" = "vlc.desktop";
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"application/pdf" = "org.gnome.Evince.desktop";
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}
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'';
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};
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persist = mkOption {
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type = options.sane.persist.sys.type;
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default = {};
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description = ''
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entries to pass onto `sane.persist.sys` or `sane.user.persist`
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when this program is enabled.
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'';
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};
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fs = mkOption {
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type = types.attrsOf (types.coercedTo types.attrs (a: [ a ]) (types.listOf types.attrs));
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default = {};
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description = "files to populate when this program is enabled";
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};
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secrets = mkOption {
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type = types.attrsOf types.path;
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default = {};
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description = ''
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fs paths to link to some decrypted secret.
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the secret will have same owner as the user under which the program is enabled.
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'';
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};
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env = mkOption {
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type = types.attrsOf types.str;
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default = {};
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description = "environment variables to set when this program is enabled";
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};
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configOption = mkOption {
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type = types.raw;
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default = mkOption {
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type = types.submodule {};
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default = {};
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};
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description = ''
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declare any other options the program may be configured with.
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you probably want this to be a submodule.
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the option *definitions* can be set with `sane.programs."foo".config = ...`.
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'';
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};
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config = config.configOption;
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};
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config = {
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enabled = config.enableFor.system || builtins.any (en: en) (lib.attrValues config.enableFor.user);
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};
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});
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toPkgSpec = with lib; types.coercedTo types.package (p: { package = p; }) pkgSpec;
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configs = lib.mapAttrsToList (name: p: {
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assertions = builtins.map (sug: {
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assertion = cfg ? "${sug}";
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message = ''program "${sug}" referenced by "${name}", but not defined'';
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}) p.suggestedPrograms;
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# conditionally add to system PATH and env
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environment = lib.optionalAttrs p.enableFor.system {
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systemPackages = lib.optional (p.package != null) p.package;
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variables = p.env;
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};
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# conditionally add to user(s) PATH
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users.users = lib.mapAttrs (user: en: {
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packages = lib.optional (p.package != null && en) p.package;
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}) p.enableFor.user;
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# conditionally persist relevant user dirs and create files
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sane.users = lib.mapAttrs (user: en: lib.optionalAttrs en {
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inherit (p) persist;
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environment = p.env;
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fs = lib.mkMerge [
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p.fs
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# link every secret into the fs:
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(lib.mapAttrs
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# TODO: user the user's *actual* home directory, don't guess.
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(homePath: _src: sane-lib.fs.wantedSymlinkTo "/run/secrets/home/${user}/${homePath}")
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p.secrets
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)
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];
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}) p.enableFor.user;
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# make secrets available for each user
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sops.secrets = lib.concatMapAttrs
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(user: en: lib.optionalAttrs en (
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lib.mapAttrs'
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(homePath: src: {
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# TODO: user the user's *actual* home directory, don't guess.
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# XXX: name CAN'T START WITH '/', else sops creates the directories funny.
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# TODO: report this upstream.
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name = "home/${user}/${homePath}";
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value = {
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owner = user;
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sopsFile = src;
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format = "binary";
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};
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})
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p.secrets
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))
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p.enableFor.user;
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}) cfg;
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in
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{
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options = with lib; {
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sane.programs = mkOption {
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type = types.attrsOf toPkgSpec;
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default = {};
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};
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};
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config =
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let
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take = f: {
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assertions = f.assertions;
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environment.systemPackages = f.environment.systemPackages;
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environment.variables = f.environment.variables;
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users.users = f.users.users;
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sane.users = f.sane.users;
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sops.secrets = f.sops.secrets;
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};
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in lib.mkMerge [
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(take (sane-lib.mkTypedMerge take configs))
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{
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# expose the pkgs -- as available to the system -- as a build target.
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system.build.pkgs = pkgs;
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sane.programs = lib.mkMerge [
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# make a program for every (toplevel) package
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(lib.mapAttrs (_pkgName: _pkg: {}) pkgs)
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# do the same for programs in known groups
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(lib.mapAttrs' (pkgName: _pkg: { name = "cacert.${pkgName}"; value = {}; }) pkgs.cacert)
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(lib.mapAttrs' (pkgName: _pkg: { name = "gnome.${pkgName}"; value = {}; }) pkgs.gnome)
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(lib.mapAttrs' (pkgName: _pkg: { name = "libsForQt5.${pkgName}"; value = {}; }) pkgs.libsForQt5)
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(lib.mapAttrs' (pkgName: _pkg: { name = "mate.${pkgName}"; value = {}; }) pkgs.mate)
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(lib.mapAttrs' (pkgName: _pkg: { name = "plasma5Packages.${pkgName}"; value = {}; }) pkgs.plasma5Packages)
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(lib.mapAttrs' (pkgName: _pkg: { name = "python3Packages.${pkgName}"; value = {}; }) pkgs.python3Packages)
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(lib.mapAttrs' (pkgName: _pkg: { name = "sane-scripts.${pkgName}"; value = {}; }) pkgs.sane-scripts)
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(lib.mapAttrs' (pkgName: _pkg: { name = "sway-contrib.${pkgName}"; value = {}; }) pkgs.sway-contrib)
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];
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}
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];
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}
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