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* Export the nix-env derivation name parsing and version comparison

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logic through the `parseDrvName' and `compareVersions' primops.
  This will allow expressions to easily check whether some dependency
  is a specific needed version or falls in some version range.  See
  tests/lang/eval-okay-versions.nix for examples.
This commit is contained in:
Eelco Dolstra 2008-07-01 10:10:32 +00:00
parent b3b0b2a29e
commit d567baabbd
9 changed files with 103 additions and 37 deletions
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2
tests/lang/lib.nix
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@ -10,6 +10,8 @@ rec {
concat =
fold (x: y: x + y) "";
and = fold (x: y: x && y) true;
flatten = x:
if isList x
then fold (x: y: (flatten x) ++ y) [] x