Author: simons
Date: Tue Aug 16 23:42:29 2011
New Revision: 28638
URL: https://svn.nixos.org/websvn/nix/?rev=28638&sc=1
Log:
pkgs/misc/misc.nix: removed the warning I added earlier
What I did was to add two versions of the same package into the same
collection, i.e. ghc-7.0.4 and ghc-7.2.1. I was surprised to see the
build succeed, because there are file collisions between these two. So I
(wrongly) assumed that the collection function was to blame, but in fact
this is a "feature" of nix-env. Apparently, file collision detection
doesn't take place when the user installs two versions of the same
package simultaneously. File collisions are detected only between
different packages!
For example, the command
nix-env -i ghc-7.0.4 ghc-7.2.1-wrapper
is going to fail, but
nix-env -i ghc-7.0.4-wrapper ghc-7.2.1-wrapper
is going to succeed. Maybe I just didn't read the documentation
thoroughly enough, but this behavior sure is unexpected to me.
Modified:
nixpkgs/trunk/pkgs/misc/misc.nix
Modified: nixpkgs/trunk/pkgs/misc/misc.nix
==============================================================================
--- nixpkgs/trunk/pkgs/misc/misc.nix Tue Aug 16 23:32:16 2011 (r28637)
+++ nixpkgs/trunk/pkgs/misc/misc.nix Tue Aug 16 23:42:29 2011 (r28638)
@@ -16,10 +16,6 @@
[ pkgs.ruby l.chronic l.sup ];
};
}
-
- Warning: Using this function, it is possible to install packages
- into one profile that have file collisions, and these will not be
- detected.
*/
collection = {list, name} : runCommand "collection-${name}" {} ''
mkdir -p $out/nix-support
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