[PATCH] release/checks/integration: adjust timeout when no KVM

[Alyssa Ross <hi@alyssa.is>]

We never use KVM for these on aarch64, but KVM may also not be used on
x86_64 if it's unavailable.  Checking for write access to /dev/kvm
should be a decent proxy for that.

Signed-off-by: Alyssa Ross <hi@alyssa.is>
---
Demi, hopefully this can make development on Qubes OS a bit less 
annoying (albiet still slow).

 release/checks/integration/default.nix | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/release/checks/integration/default.nix b/release/checks/integration/default.nix
index 5709186..eb3be07 100644
--- a/release/checks/integration/default.nix
+++ b/release/checks/integration/default.nix
@@ -65,10 +65,11 @@ stdenv.mkDerivation (finalAttrs: {
 
   doCheck = true;
   dontAddTimeoutMultiplier = true;
-  mesonCheckFlags = lib.optionals stdenv.hostPlatform.isAarch64 [
-    # Tests are run with TCG on aarch64.
-    "--timeout-multiplier=15"
-  ];
+  preCheck = ''
+    if [ -n "$FORCE_LONG_TIMEOUTS" ] || ! [ -w /dev/kvm ]; then
+      mesonCheckFlagsArray+=(--timeout-multiplier=15)
+    fi
+  '';
 
   installPhase = ''
     runHook preInstall
@@ -83,6 +84,7 @@ stdenv.mkDerivation (finalAttrs: {
   env = {
     QEMU_SYSTEM = "qemu-system-${stdenv.hostPlatform.qemuArch} -nographic";
     EFI_PATH = "${qemu_kvm}/share/qemu/edk2-${stdenv.hostPlatform.qemuArch}-code.fd";
+    FORCE_LONG_TIMEOUTS = toString stdenv.buildPlatform.isAarch64;
     IMG_PATH = live;
     USER_DATA_PATH = userData;
   };
-- 
2.51.0