c4c17a7843f76883f725aed2f052dd4a39c5c0c2
The function for use in setup hooks. The syntax is very simple: add_to_var varName needDir addDir prefix If the directory $prefix$needDir exists, directory $prefix$addDir is added to variable named varName (using PATH_DELIMITER as delimiter). If addDir is "", it defaults to needDir (this is a most common case). svn path=/nixpkgs/trunk/; revision=9496
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