56 lines
1.4 KiB
Nix
56 lines
1.4 KiB
Nix
# generate the script used to activate the configuration.
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{pkgs, config, ...}:
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let
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inherit (pkgs.stringsWithDeps) textClosureMap noDepEntry;
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inherit (pkgs.lib) mkOption mergeTypedOption mergeAttrs mapRecordFlatten
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mapAttrs addErrorContext fold id;
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textClosure = steps:
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textClosureMap id steps (
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[(noDepEntry "#!/bin/sh")]
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++ (mapRecordFlatten (a: v: v) steps)
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);
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aggregateScripts = name: steps:
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pkgs.writeScript name (textClosure steps);
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addAttributeName = mapAttrs (a: v: {
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text = ''
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#### ${a} begin
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${v.text}
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#### ${a} end
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'';
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inherit (v) deps;
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});
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in
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{
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system = {
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activationScripts = mkOption {
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default = [];
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example = {
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stdio = {
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text = "
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# Needed by some programs.
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ln -sfn /proc/self/fd /dev/fd
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ln -sfn /proc/self/fd/0 /dev/stdin
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ln -sfn /proc/self/fd/1 /dev/stdout
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ln -sfn /proc/self/fd/2 /dev/stderr
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";
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deps = [];
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};
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};
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description = ''
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Activate the new configuration (i.e., update /etc, make accounts,
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and so on).
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'';
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merge = mergeTypedOption "script" builtins.isAttrs (fold mergeAttrs {});
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apply = set:
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let lib = addAttributeName set; in {
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inherit lib; # used to fetch dependencies.
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script = aggregateScripts "activationScript" lib;
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};
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};
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};
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}
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