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4 Commits

Author SHA1 Message Date
Eelco Dolstra 4a91cfd32b Add a global variable ‘inNixShell’ 
This is primarily useful in Nix expressions that are also intended to
be used by nix-shell.  It allows saying things like:

  buildInputs = [ ... ] ++ (if inNixShell then [ emacs ] else [ ]);

This should not be used in Nixpkgs (since the question of what
constitutes a useful nix-shell environment is very subjective).
 2014-02-19 19:03:16 +01:00
Eelco Dolstra 484403bf0e Add a constant ‘nixpkgsVersion’ 
This makes it a bit easier to find out the current Nixpkgs version,
e.g.

  $ nix-instantiate --eval '<nixpkgs>' -A lib.nixpkgsVersion
  "14.02.35657.66f51a9"
 2014-02-19 19:03:16 +01:00
Eelco Dolstra 785eaf2cea Add some primops to lib 2013-11-12 13:48:30 +01:00
Eelco Dolstra 5fef92c4a0 Move pkgs/lib/ to lib/ 2013-10-10 13:28:21 +02:00