dmd -run fails with Nix on macOS Mojave

[Jonathan Marler]

On Tuesday, 19 February 2019 at 20:37:48 UTC, Thomas Mader wrote:
> On Tuesday, 19 February 2019 at 20:32:32 UTC, Thomas Mader 
> wrote:
>> I don't know what the compiler wants to write to 
>> /var/tmp/dmd_runNVSCJp and why that fails with a Permission 
>> denied.
>
> Ok I found it, it's created in link.d

Not sure if macos does this, but on linux you can mount 
directories as "noexec" which means you can't run executables 
that live inside those mounts.  On linux you could check this 
with "mount | grep /var/tmp", not sure if it's the same on MacOS.

(Related Issue: https://github.com/dragon-lang/rund/issues/17)