temmie/userweb: set -i and -t in sendmail wrapper

hosts/temmie/services/userweb/default.nix

@@ -39,7 +39,7 @@ let
     extraConfig = phpOptions;
   };
 
-  perlEnv = pkgs.perl.withPackages (ps: with ps; [
+  perlEnv = (pkgs.perl.withPackages (ps: with ps; [
     pkgs.exiftool
     pkgs.ikiwiki
     pkgs.irssi
@@ -54,7 +54,14 @@ let
     ImageMagick
     JSON
     TemplateToolkit
-  ]);
+  ])).overrideAttrs (prev: {
+    # NOTE: `pkgs.perl.propagatedBuildInputs` don't actually propagate through the
+    #       wrapper derivation created by `withPackages`. This should compensate
+    #       for that.
+    postBuild = prev.postBuild + ''
+      cp -r '${pkgs.perl}/nix-support' "$out"/nix-support
+    '';
+  });
 
   # https://nixos.org/manual/nixpkgs/stable/#python.buildenv-function
   pythonEnv = pkgs.python3.buildEnv.override {
@@ -169,17 +176,21 @@ in
     extraModules = [
       "systemd"
       "userdir"
-      # TODO: I think the compilation steps of pkgs.apacheHttpdPackages.mod_perl might have some
-      #       incorrect or restrictive assumptions upstream, either nixpkgs or source
-      # {
-      #   name = "perl";
-      #   path = let
-      #     mod_perl = pkgs.apacheHttpdPackages.mod_perl.override {
-      #       apacheHttpd = cfg.package.out;
-      #       perl = perlEnv;
-      #     };
-      #   in "${mod_perl}/modules/mod_perl.so";
-      # }
+      {
+        name = "perl";
+        path = let
+          mod_perl = pkgs.symlinkJoin {
+            name = "userweb_modperl_with_custom_perl_env";
+            ignoreCollisions = true;
+            paths = [
+              (pkgs.apacheHttpdPackages.mod_perl.override {
+                apacheHttpd = cfg.package.out;
+              })
+              perlEnv
+            ];
+          };
+        in "${mod_perl}/modules/mod_perl.so";
+      }
     ];
 
     extraConfig = ''
@@ -188,11 +199,14 @@ in
       ScriptLog ${cfg.logDir}/cgi.log
     '';
 
-    # virtualHosts."userweb.pvv.ntnu.no" = {
     virtualHosts."temmie.pvv.ntnu.no" = {
       forceSSL = true;
       enableACME = true;
 
+      serverAliases = [
+        "www2.pvv.ntnu.no"
+      ];
+
       extraConfig = ''
         UserDir ${lib.concatMapStringsSep " " (l: "/home/pvv/${l}/*/web-docs") homeLetters}
         UserDir disabled root
@@ -243,6 +257,14 @@ in
   #   ];
   # };
 
+  # NOTE: 54 -> 33, this is the UID/GID we used for www-data on tom in the past.
+  #       Any files accessed by or created by httpd will do so over NFS with this
+  #       UID/GID pair as its credentials.
+  #       This overlaps with the hardcoded `disnix` uid in nixpkgs, but we *probably*
+  #       won't be using that for the foreseeable future.
+  users.users."wwwrun".uid = lib.mkForce 33;
+  users.groups."wwwrun".gid = lib.mkForce 33;
+
   systemd.services.httpd = {
     after = [ "pvv-homedirs.target" ];
     requires = [ "pvv-homedirs.target" ];

hosts/temmie/services/userweb/mail.nix

@@ -40,7 +40,7 @@
                     args=("-f$USERDIR_USER" "''${args[@]}")
                 fi
 
-                exec '${lib.getExe pkgs.system-sendmail}' "''${args[@]}"
+                exec '${lib.getExe pkgs.system-sendmail}' -t -i "''${args[@]}"
               '';
             };
           in lib.getExe sendmailWrapper;