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WIP: decrease quadratic operations in modules/programs.nix

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Colin 2023-07-03 07:04:57 +00:00
parent 9b9273b725
commit 83e48eabad
1 changed files with 30 additions and 7 deletions
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37
modules/programs.nix
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@ -20,6 +20,28 @@ let
;
inherit (sane-lib) joinAttrsets;
cfg = config.sane.programs;
# create a map:
# {
# "${pkgName}" = {
# system = true|false;
# users = {
# "${name}" = true|false;
# };
# };
# }
# for every ${pkgName} in pkgSpecs.
# `system = true|false` is a computed expression over all the other programs, as evaluated.
solveDefaultEnableFor = pkgSpecs: lib.foldlAttrs (
acc: pname: pval: (
# add "${enableName}".system |= areSuggestionsEnabled pval
# for each `enableName` in pvalsuggestedPackages
lib.foldl (acc': enableName: acc' // {
"${enableName}".system = (acc'."${enableName}" or { system = false; }).system
|| (pval.enableFor.system && pval.enableSuggested);
}) acc pval.suggestedPrograms
)
) {} pkgSpecs;
defaultEnables = solveDefaultEnableFor cfg;
pkgSpec = types.submodule ({ config, name, ... }: {
options = {
package = mkOption {
@ -51,13 +73,14 @@ let
# then it's just `default = any (pname: cfg."${pname}".enableFor.system) enableMap."${name}";`
enableFor.system = mkOption {
type = types.bool;
default = any (en: en) (
mapAttrsToList
(otherName: otherPkg:
otherName != name && elem name otherPkg.suggestedPrograms && otherPkg.enableSuggested && otherPkg.enableFor.system
)
cfg
);
default = (defaultEnables."${name}" or { system = false; }).system;
# default = any (en: en) (
# mapAttrsToList
# (otherName: otherPkg:
# otherName != name && elem name otherPkg.suggestedPrograms && otherPkg.enableSuggested && otherPkg.enableFor.system
# )
# cfg
# );
description = ''
place this program on the system PATH
'';