bat: move nixos test to installCheckPhase

nixos/tests/all-tests.nix

···
   avahi-with-resolved = handleTest ./avahi.nix { networkd = true; };
   awscli = handleTest ./awscli.nix { };
   babeld = handleTest ./babeld.nix {};
-  bat = handleTest ./bat.nix {};
   bazarr = handleTest ./bazarr.nix {};
   bcachefs = handleTestOn ["x86_64-linux"] ./bcachefs.nix {}; # linux-4.18.2018.10.12 is unsupported on aarch64
   beanstalkd = handleTest ./beanstalkd.nix {};

nixos/tests/bat.nix

···
-import ./make-test-python.nix ({ pkgs, ... }: {
-  name = "bat";
-  meta = with pkgs.lib.maintainers; { maintainers = [ nequissimus ]; };
-
-  machine = { pkgs, ... }: { environment.systemPackages = [ pkgs.bat ]; };
-
-  testScript = ''
-    machine.succeed("echo 'Foobar\n\n\n42' > /tmp/foo")
-    assert "Foobar" in machine.succeed("bat -p /tmp/foo")
-    assert "42" in machine.succeed("bat -p /tmp/foo -r 4:4")
-  '';
-})

pkgs/tools/misc/bat/default.nix

···
 { lib
 , stdenv
-, nixosTests
 , rustPlatform
 , fetchFromGitHub
 , pkg-config
···
 
   checkFlags = [ "--skip=pager_more" "--skip=pager_most" ];
 
-  passthru.tests = { inherit (nixosTests) bat; };
+  doInstallCheck = true;
+  installCheckPhase = ''
+    runHook preInstallCheck
+
+    testFile=$(mktemp /tmp/bat-test.XXXX)
+    echo -ne 'Foobar\n\n\n42' > $testFile
+    $out/bin/bat -p $testFile | grep "Foobar"
+    $out/bin/bat -p $testFile -r 4:4 | grep 42
+    rm $testFile
+
+    runHook postInstallCheck
+  '';
 
   meta = with lib; {
     description = "A cat(1) clone with syntax highlighting and Git integration";