pinwheel/manatee/backwards: Adjust for updated nixpkgs

hosts/manatee/modules/age/default.nix

@@ -8,7 +8,7 @@
     };
 
     environment.systemPackages = [
-      inputs.agenix.packages."${pkgs.system}".default
+      inputs.agenix.packages."${pkgs.stdenv.hostPlatform.system}".default
     ];
   };
 }

hosts/manatee/modules/git/default.nix

@@ -23,7 +23,7 @@ in
           { path = ./gitconfig; }
         ];
 
-        extraConfig = {
+        settings = {
           rerere.enable = true;
         };
       };

hosts/manatee/modules/ssh/default.nix

@@ -27,6 +27,19 @@ in
             hostname = "git.ppp.pm";
             identityFile = "/home/alex/.ssh/alex.manatee-git.ppp.pm";
           };
+
+          "*" = {
+            forwardAgent = false;
+            addKeysToAgent = "no";
+            compression = false;
+            serverAliveInterval = 0;
+            serverAliveCountMax = 3;
+            hashKnownHosts = false;
+            userKnownHostsFile = "~/.ssh/known_hosts";
+            controlMaster = "no";
+            controlPath = "~/.ssh/master-%r@%n:%p";
+            controlPersist = "no";
+          };
         };
       };
     };