mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-14 22:04:27 +01:00
26 lines
884 B
Nix
26 lines
884 B
Nix
{
|
|
pkgs ? import <nixpkgs> { },
|
|
feature,
|
|
}:
|
|
|
|
pkgs.runCommandNoCC "${feature}-present" { requiredSystemFeatures = [ feature ]; } ''
|
|
if [[ ! -e /${feature}-files ]]; then
|
|
echo "The host declares ${feature} support, but doesn't expose /${feature}-files" >&2
|
|
exit 1
|
|
fi
|
|
libcudaLocation=/run/opengl-driver/lib/libcuda.so
|
|
if [[ -e "$libcudaLocation" || -h "$libcudaLocation" ]] ; then
|
|
true # we're good
|
|
else
|
|
echo "The host declares ${feature} support, but it the hook fails to handle the hostPath != guestPath cases" >&2
|
|
exit 1
|
|
fi
|
|
if cat "$libcudaLocation" | xargs test fakeContent = ; then
|
|
true # we're good
|
|
else
|
|
echo "The host declares ${feature} support, but it seems to fail to follow symlinks" >&2
|
|
echo "The content of /run/opengl-driver/lib/libcuda.so is: $(cat /run/opengl-driver/lib/libcuda.so)" >&2
|
|
exit 1
|
|
fi
|
|
touch $out
|
|
''
|