os/mixin/radicle: Use nixpkgs

os/mixin/radicle.nix

@@ -6,7 +6,6 @@
 }: {
   services.radicle = {
     enable = true;
-    package = pkgs.radicle-node-1_2;
     privateKeyFile = "/etc/ssh/ssh_host_ed25519_key";
     publicKey = "/etc/ssh/ssh_host_ed25519_key.pub";
     settings = {
@@ -15,10 +14,7 @@
         externalAddresses = [
           "${config.networking.fqdn}:8776"
         ];
-        peers = {
-          type = "dynamic";
-          target = 8;
-        };
+        peers.type = "dynamic";
         db.journalMode = "wal";
         workers = 32;
         relay = "always";
@@ -47,7 +43,6 @@
 
     httpd = {
       enable = true;
-      package = pkgs.radicle-httpd-master;
       nginx = {
         addSSL = true;
         enableACME = true;