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/servers/monitoring/grafana-agent/default.nix

@@ -0,0 +1,46 @@
+{ lib, buildGoModule, fetchFromGitHub, systemd }:
+
+buildGoModule rec {
+  pname = "grafana-agent";
+  version = "0.24.1";
+
+  src = fetchFromGitHub {
+    rev = "v${version}";
+    owner = "grafana";
+    repo = "agent";
+    sha256 = "sha256-WxULVtqKxYXMWNY4l0wvTkqcDkPrlHcS70NgQhe8nzU=";
+  };
+
+  vendorSha256 = "sha256-hdo8uiVJAMMPo1N8kLDFPSbyTr5WxNKtq8E7pj6Plak=";
+
+  tags = [
+    "nonetwork"
+    "nodocker"
+  ];
+
+  # uses go-systemd, which uses libsystemd headers
+  # https://github.com/coreos/go-systemd/issues/351
+  NIX_CFLAGS_COMPILE = [ "-I${lib.getDev systemd}/include" ];
+
+  # tries to access /sys: https://github.com/grafana/agent/issues/333
+  preBuild = ''
+    rm pkg/integrations/node_exporter/node_exporter_test.go
+  '';
+
+  # go-systemd uses libsystemd under the hood, which does dlopen(libsystemd) at
+  # runtime.
+  # Add to RUNPATH so it can be found.
+  postFixup = ''
+    patchelf \
+      --set-rpath "${lib.makeLibraryPath [ (lib.getLib systemd) ]}:$(patchelf --print-rpath $out/bin/agent)" \
+      $out/bin/agent
+  '';
+
+  meta = with lib; {
+    description = "A lightweight subset of Prometheus and more, optimized for Grafana Cloud";
+    license = licenses.asl20;
+    homepage = "https://grafana.com/products/cloud";
+    maintainers = with maintainers; [ flokli ];
+    platforms = platforms.linux;
+  };
+}