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Enable recursive Nix using a feature

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Derivations that want to use recursion should now set

  requiredSystemFeatures = [ "recursive-nix" ];

to make the daemon socket appear.

Also, Nix should be configured with "experimental-features =
recursive-nix".
This commit is contained in:
Eelco Dolstra 2019-11-04 13:48:58 +01:00
parent 2af9561316
commit c119ab9db0
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3 changed files with 8 additions and 3 deletions
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2
src/libstore/globals.cc
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@ -95,7 +95,7 @@ StringSet Settings::getDefaultSystemFeatures()
/* For backwards compatibility, accept some "features" that are
used in Nixpkgs to route builds to certain machines but don't
actually require anything special on the machines. */
StringSet features{"nixos-test", "benchmark", "big-parallel"};
StringSet features{"nixos-test", "benchmark", "big-parallel", "recursive-nix"};
#if __linux__
if (access("/dev/kvm", R_OK | W_OK) == 0)