JakeHillion/nixpkgs
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pkgs/misc/misc.nix: removed the warning I added earlier

Browse Source 
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.

svn path=/nixpkgs/trunk/; revision=28638
This commit is contained in:
Peter Simons 2011-08-16 23:42:29 +00:00
parent 1cff2d41aa
commit 01d9831f4b
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
pkgs/misc/misc.nix
View File

@ -16,10 +16,6 @@ in
[ pkgs.ruby l.chronic l.sup ]; [ 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-${name}" {} '' collection = {list, name} : runCommand "collection-${name}" {} ''
mkdir -p $out/nix-support mkdir -p $out/nix-support