uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/security/tracee/test.nix

@@ -0,0 +1,41 @@
+{ pkgs ? import ../../../../. { } }:
+
+# manually run `nix-build ./pkgs/tools/security/tracee/test.nix` to test
+pkgs.nixosTest ({
+  name = "tracee-test";
+  nodes = {
+    machine = { config, pkgs, ... }: {
+      environment.systemPackages = [
+        pkgs.tracee
+        # build the go integration tests as a binary
+        (pkgs.tracee.overrideAttrs (oa: {
+          pname = oa.pname + "-integration";
+          patches = oa.patches or [] ++ [
+            # skip test that runs `init -q` which is incompatible with systemd init
+            ./skip-init-test.patch
+            # skip magic_write test that currently fails
+            ./skip-magic_write-test.patch
+          ];
+          # just build the static lib we need for the go test binary
+          makeFlags = oa.makeFlags ++ [ "./dist/libbpf/libbpf.a" ];
+          postBuild = ''
+            # by default the tests are disabled and this is intended to be commented out
+            sed -i '/t.Skip("This test requires root privileges")/d' ./tests/integration/integration_test.go
+            CGO_CFLAGS="-I$PWD/dist/libbpf" CGO_LDFLAGS="-lelf -lz $PWD/dist/libbpf/libbpf.a" go test -tags ebpf,integration -c -o $GOPATH/tracee-integration ./tests/integration
+          '';
+          doCheck = false;
+          installPhase = ''
+            mkdir -p $out/bin
+            cp $GOPATH/tracee-integration $out/bin
+          '';
+          doInstallCheck = false;
+        }))
+      ];
+    };
+  };
+
+  testScript = ''
+    with subtest("run integration tests"):
+      print(machine.succeed('TRC_BIN="$(which tracee-ebpf)" tracee-integration -test.v -test.run "Test_Events"'))
+  '';
+})