Add RAC outpost

Co-authored-by: Maximilian Bosch <maximilian@mbosch.me>

components/gopkgs.nix

@@ -5,8 +5,13 @@
   buildGo124Module,
   lib,
   makeWrapper,
+  guacamole-server,
+  stdenv,
 }:
 
+let
+  guacamoleAvailable = lib.meta.availableOn stdenv.hostPlatform guacamole-server;
+in
 buildGo124Module {
   pname = "authentik-gopkgs";
   version = authentik-version;
@@ -14,6 +19,10 @@ buildGo124Module {
     sed -i"" -e 's,./web/dist/,${authentikComponents.frontend}/dist/,' web/static.go
     sed -i"" -e 's,./web/dist/,${authentikComponents.frontend}/dist/,' internal/web/static.go
     sed -i"" -e 's,./lifecycle/gunicorn.conf.py,${authentikComponents.staticWorkdirDeps}/lifecycle/gunicorn.conf.py,' internal/gounicorn/gounicorn.go
+  '' + lib.optionalString guacamoleAvailable ''
+    substituteInPlace internal/outpost/rac/guacd.go \
+      --replace-fail '/opt/guacamole/sbin/guacd' \
+                     "${lib.getExe guacamole-server}"
   '';
   src = lib.cleanSourceWith {
     src = authentik-src;
@@ -41,12 +50,16 @@ buildGo124Module {
     "ldap"
     "proxy"
     "radius"
+  ] ++ lib.optionals guacamoleAvailable [
+    "rac"
   ];
   subPackages = [
     "cmd/ldap"
     "cmd/server"
     "cmd/proxy"
     "cmd/radius"
+  ] ++ lib.optionals guacamoleAvailable [
+    "cmd/rac"
   ];
   vendorHash = "sha256-wTTEDBRYCW1UFaeX49ufLT0c17sacJzcCaW/8cPNYR4=";
   nativeBuildInputs = [ makeWrapper ];
@@ -59,5 +72,8 @@ buildGo124Module {
     mv $out/bin/ldap $ldap/bin/
     mv $out/bin/proxy $proxy/bin/
     mv $out/bin/radius $radius/bin/
+  '' + lib.optionalString guacamoleAvailable ''
+    mkdir -p $rac/bin
+    mv $out/bin/rac $rac/bin/
   '';
 }