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activation-script module: add environment.usrbinenv option

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This commit is contained in:
Nathan Zadoks 2016-01-19 18:11:36 +01:00
parent e67717bc8d
commit df82096af0
1 changed files with 19 additions and 3 deletions
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22
nixos/modules/system/activation/activation-script.nix
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@ -94,6 +94,18 @@ in
}; };
environment.usrbinenv = mkOption {
default = "${pkgs.coreutils}/bin/env";
example = literalExample ''
"''${pkgs.busybox}/bin/env"
'';
type = types.nullOr types.path;
visible = false;
description = ''
The env(1) executable that is linked system-wide to
<literal>/usr/bin/env</literal>.
'';
};
}; };
@ -128,11 +140,15 @@ in
mkdir -m 0555 -p /var/empty mkdir -m 0555 -p /var/empty
''; '';
system.activationScripts.usrbinenv = system.activationScripts.usrbinenv = if config.environment.usrbinenv != null
'' then ''
mkdir -m 0755 -p /usr/bin mkdir -m 0755 -p /usr/bin
ln -sfn ${pkgs.coreutils}/bin/env /usr/bin/.env.tmp ln -sfn ${config.environment.usrbinenv} /usr/bin/.env.tmp
mv /usr/bin/.env.tmp /usr/bin/env # atomically replace /usr/bin/env mv /usr/bin/.env.tmp /usr/bin/env # atomically replace /usr/bin/env
''
else ''
rm -f /usr/bin/env
rmdir --ignore-fail-on-non-empty /usr/bin /usr
''; '';
system.activationScripts.tmpfs = system.activationScripts.tmpfs =