ssl-proxy: unpin go

pkgs/tools/networking/ssl-proxy/default.nix

@@ -13,6 +13,10 @@ buildGoModule rec {
 
   vendorHash = "sha256-310K9ZSxy/OQ4HYFCcHQaj4NQwzATrOZ2YkhiSkhY5I=";
 
+  patches = [
+    ./go120-compatibility.patch
+  ];
+
   checkTarget = "test";
 
   meta = with lib; {

pkgs/tools/networking/ssl-proxy/go120-compatibility.patch

@@ -0,0 +1,18 @@
+Check whether User-Agent is defined before trying to override it
+
+Since Go 1.20 [1], ReverseProxy no longer adds a User-Agent header to forwarded
+requests.
+
+[1] https://github.com/golang/go/commit/f001df540b3fc66a475985c1b7c810e7df063c8f
+
+--- a/reverseproxy/reverseproxy.go
++++ b/reverseproxy/reverseproxy.go
+@@ -32,7 +32,7 @@ func newDirector(target *url.URL, extraDirector func(*http.Request)) func(*http.
+ 		} else {
+ 			req.URL.RawQuery = targetQuery + "&" + req.URL.RawQuery
+ 		}
+-		if _, ok := req.Header["User-Agent"]; !ok {
++		if req.Header.Get("User-Agent") != "" {
+ 			// explicitly disable User-Agent so it's not set to default value
+ 			req.Header.Set("User-Agent", "")
+ 		}

pkgs/top-level/all-packages.nix

@@ -42031,9 +42031,7 @@ with pkgs;
 
   yazi = callPackage ../applications/file-managers/yazi { inherit (darwin.apple_sdk.frameworks) Foundation; };
 
-  ssl-proxy = callPackage ../tools/networking/ssl-proxy {
-    buildGoModule = buildGo119Module; # build fails with 1.20
-  };
+  ssl-proxy = callPackage ../tools/networking/ssl-proxy { };
 
   code-maat = callPackage ../development/tools/code-maat {};