WIP: decrease quadratic operations in modules/programs.nix
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@ -20,6 +20,28 @@ let
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;
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inherit (sane-lib) joinAttrsets;
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cfg = config.sane.programs;
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# create a map:
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# {
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# "${pkgName}" = {
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# system = true|false;
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# users = {
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# "${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 pvalsuggestedPackages
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lib.foldl (acc': enableName: acc' // {
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"${enableName}".system = (acc'."${enableName}" or { system = false; }).system
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|| (pval.enableFor.system && pval.enableSuggested);
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}) acc pval.suggestedPrograms
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)
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) {} pkgSpecs;
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defaultEnables = solveDefaultEnableFor cfg;
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pkgSpec = types.submodule ({ config, name, ... }: {
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options = {
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package = mkOption {
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@ -51,13 +73,14 @@ let
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# then it's just `default = any (pname: cfg."${pname}".enableFor.system) enableMap."${name}";`
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enableFor.system = mkOption {
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type = types.bool;
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default = any (en: en) (
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mapAttrsToList
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(otherName: otherPkg:
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otherName != name && elem name otherPkg.suggestedPrograms && otherPkg.enableSuggested && otherPkg.enableFor.system
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)
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cfg
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);
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default = (defaultEnables."${name}" or { system = false; }).system;
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# default = any (en: en) (
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# mapAttrsToList
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# (otherName: otherPkg:
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# otherName != name && elem name otherPkg.suggestedPrograms && otherPkg.enableSuggested && otherPkg.enableFor.system
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# )
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# cfg
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# );
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description = ''
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place this program on the system PATH
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'';
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