haskell - cabal: how to automatically update the build-depends field in the .cabal file? -


how automatically update build-depends field in .cabal-file? example, start following .cabal file:

name:           hunit version:        1.1.1 synopsis:       unit testing framework haskell homepage:       http://hunit.sourceforge.net/ category:       testing author:         dean herington license:        bsd3 license-file:   license cabal-version:  >= 1.10 build-type:     simple  library   build-depends:      base >= 2 && < 4   exposed-modules:    test.hunit.base, test.hunit.lang,                       test.hunit.terminal, test.hunit.text, test.hunit   default-extensions: cpp

then, install package:

cabal install warp

now, have add warp >=3.0 && <3.1 build-depends field, make file this:

name:           hunit version:        1.1.1 synopsis:       unit testing framework haskell homepage:       http://hunit.sourceforge.net/ category:       testing author:         dean herington license:        bsd3 license-file:   license cabal-version:  >= 1.10 build-type:     simple  library   build-depends:      base >= 2 && < 4, warp >=3.0 && <3.1   exposed-modules:    test.hunit.base, test.hunit.lang,                       test.hunit.terminal, test.hunit.text, test.hunit   default-extensions: cpp

my question is: how update file automatically?


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