Got error when installing inim
Got the following error when installing inim. (in macOS, nim latest version installed by homebrew)

It seems to require C compiler. I use gcc also installed by homebrew.

> /Users/william/.cache/nim/inim_r/stdlib_io.nim.c:12:10: fatal error: 'stdio.h'
>       file not found
> #include <stdio.h>
>          ^~~~~~~~~
> /Users/william/.cache/nim/inim_r/stdlib_system.nim.c:12:10: fatal error:
>       'sys/mman.h' file not found
> #include <sys/mman.h>
>          ^~~~~~~~~~~~
> 1 error generated.
> Error: execution of an external compiler program 'clang -c  -w -ferror-limit=3 -O3   -I/usr/local/Cellar/nim/1.4.0/nim/lib -I'/private/var/folders/md/8kgtqqz12j94hbcvhqz0w7gw0000gp/T/nimble_21686/githubcom_inimreplINim_#head' -o /Users/william/.cache/nim/inim_r/stdlib_io.nim.c.o /Users/william/.cache/nim/inim_r/stdlib_io.nim.c' failed with exit code: 1
> 
> 
>        Tip: 74 messages have been suppressed, use --verbose to show them.
>      Error: Build failed for package: inim
>         ... Execution failed with exit code 256
>         ... Command: /usr/local/Cellar/nim/1.4.0/nim/bin/nim c --colors:on --noNimblePath -d:release -d:NimblePkgVersion=0.6.1 --path:/Users/william/.nimble/pkgs/cligen-1.3.2 --path:/Users/william/.nimble/pkgs/noise-0.1.4 --hints:off -o:'/var/folders/md/8kgtqqz12j94hbcvhqz0w7gw0000gp/T/nimble_21686/githubcom_inimreplINim_#head/inim' '/var/folders/md/8kgtqqz12j94hbcvhqz0w7gw0000gp/T/nimble_21686/githubcom_inimreplINim_#head/inim.nim'
> 1 error generated.