Commit 3a5f6ae7 authored by Bertram Felgenhauer's avatar Bertram Felgenhauer Committed by Mikhail Glushenkov
Browse files

Add -none syntax for version ranges.

The motivation is to be able to say --constraint 'foo -none' to prevent
'foo' from being considered when installing packages. See #2092.
parent ce473997
......@@ -722,9 +722,11 @@ instance Text VersionRange where
return f)
factor = Parse.choice $ parens expr
: parseAnyVersion
: parseNoVersion
: parseWildcardRange
: map parseRangeOp rangeOps
parseAnyVersion = Parse.string "-any" >> return AnyVersion
parseNoVersion = Parse.string "-none" >> return noVersion
parseWildcardRange = do
_ <- Parse.string "=="
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