On 09/24/2015 05:06 PM, Gershom B wrote: > On September 24, 2015 at 11:01:53 AM, Bardur Arantsson (s...@scientician.net) > wrote: >> On 09/22/2015 12:11 AM, Gershom B wrote: >> [--snip--] >>> >>> The proposal there would be to add an env variable (perhaps >>> CABAL_PATH_PREFIX) which, if it existed, would be added to the path >>> before running child processes (such as those kicked off by >>> build-type:configure). That way windows environments could provide the >>> Msys2 bin directory and those tools would then be made available to >>> the configure scripts, etc. >>> >> >> I'm not sure I understand... what does CABAL_PATH_PREFIX add over just >> adding whatever is needed to the $PATH before executing cabal? >> >> (Without having looked at the issue thread.) >> >> I'm mainly worried about option-itis... which cabal-install is already >> suffering a lot from. > > This is a fine question. By the way, I realized this might better be served > as a cabal-path-prefix option (in cabal config) rather than an env variable, > since that is more uniform. > > In any case, the issue is this. Suppose I want to work with MSys2, as MinGHC > does. This is what lets me build against various c libraries, even in a > windows environment. To do so, I need all the MSys2 tools in my path. So far, > so good. > > But… those tools overlap in name with other tools in my path. For example, > with my existing cygwin installation. And also with other tools of the same > names at times that are the _windows_ versions of those common utilities. > > So, I want MSys2 tools in my path but _only_ when I am building cabal > packages, and not otherwise. > > Either I manually modify my env each time I want to build a cabal package, > _or_ we teach cabal to be clever and handle it for us, which is the > motivation for this. >
Just write a little wrapper for cabal which sets the path and calls the "real" cabal...? _______________________________________________ cabal-devel mailing list cabal-devel@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/cabal-devel
