prefect: use custom caddy build

hosts/prefect/services/caddy.nix

@@ -6,6 +6,11 @@
 }: {
   services.caddy = {
     enable = true;
+    package = pkgs.callPackage ../../../pkgs/caddy.nix {
+      plugins = [
+        "github.com/greenpau/caddy-security"
+      ];
+    };
     email = "hedgehog@mrhedgehog.xyz";
     # globalConfig = ''
     # '';

pkgs/caddy.nix

@@ -0,0 +1,59 @@
+{ lib, fetchFromGitHub, buildGoModule, plugins ? [], vendorSha256 ? "" }:
+
+with lib;
+
+let imports = flip concatMapStrings plugins (pkg: "\t\t\t_ \"${pkg}\"\n");
+
+	main = ''
+		package main
+
+		import (
+			caddycmd "github.com/caddyserver/caddy/v2/cmd"
+
+			_ "github.com/caddyserver/caddy/v2/modules/standard"
+${imports}
+		)
+
+		func main() {
+			caddycmd.Main()
+		}
+	'';
+
+
+in buildGoModule rec {
+	pname = "caddy";
+	version = "2.4.6";
+  runVend = true;
+	subPackages = [ "cmd/caddy" ];
+
+  src = fetchFromGitHub {
+    owner = "caddyserver";
+    repo = "caddy";
+    rev = "v${version}";
+    sha256 = "sha256-xNCxzoNpXkj8WF9+kYJfO18ux8/OhxygkGjA49+Q4vY=";
+  };
+
+	inherit vendorSha256;
+
+	overrideModAttrs = (_: {
+		preBuild    = "echo '${main}' > cmd/caddy/main.go";
+		postInstall = "cp go.sum go.mod $out/ && ls $out/";
+	});
+
+	postPatch = ''
+		echo '${main}' > cmd/caddy/main.go
+		cat cmd/caddy/main.go
+	'';
+
+	postConfigure = ''
+		cp vendor/go.sum ./
+		cp vendor/go.mod ./
+	'';
+
+	meta = {
+		homepage = https://caddyserver.com;
+		description = "Fast, cross-platform HTTP/2 web server with automatic HTTPS";
+		license = licenses.asl20;
+    maintainers = with maintainers; [ Br1ght0ne ];
+	};
+}