Is there any way to install the package in Windows?

[etairi]

Is it possible to install the package under Windows? I tried using MinGW, and I can run ./configure command. But, what about installation? Clearly, running cabal install won't work.

[hvr]

I'm afraid it's not supposed to work with GHC/MinGW (it even says so in the package description)...

[etairi]

I can't even install it with Cygwin, though it says in the docs it works under Cygwin.

[Rufflewind]

I can't even install it with Cygwin, though it says in the docs it works under Cygwin.

It should work on Cygwin if you use a Cygwin-build of GHC and Cabal. If it doesn't then it should be considered a bug.

[rakesh-k]

I am on Windows and need to install stack-run which depends on this package. And the unix package installation fails with this error:

cabal: Error: some packages failed to install:
unix-2.7.2.0 failed during the building phase. The exception was:
ExitFailure 1

[RyanGlScott]

@rakesh-k, sorry, unix simply won't build on Windows.

Long ago, I believe GHC used to have a Cygwin-specific build that would allow you to install POSIX-heavy packages like unix, but that is certainly no longer the case. Nowadays, trying to link against the Cygwin runtime using MinGW-w64 libraries will inevitably lead to horrific linker errors, as the two each define their own, incompatible versions of several primitives (e.g., timer_t).

The workaround is to find an equivalent way to do things on Windows that doesn't require the unix package, I'm afraid. There is a unix-compat package that provides Windows shims for emulating the functionality of much of unix, so it's possible that might work for you.

[RyanGlScott]

Although now that I look closer, your issue in particular isn't that stack-run depends directly on unix, but rather that it depends on vty, which in turn depends on unix. This is a known issue, and from what I understand, fixing it is much more complicated than swapping out some unix functions for unix-compat ones, unfortunately.

[RyanGlScott]

@rakesh-k: See also yamadapc/stack-run#6, which tracks the progress to remove stack-run's dependency on vty when built with Windows.

[RyanGlScott]

Closing since as of e745f0c, unix.cabal literally prevents you from installing unix on Windows due to the aforementioned issues.