Fix darwin build by using unix sockets only

Stop using TCP sockets in builds to avoid port conflicts

Author: jfroche

nix/cargo-pgrx/buildPgrxExtension.nix

@@ -94,7 +94,13 @@ let
     export PGRX_HOME=$(mktemp -d)
     export PGDATA="$PGRX_HOME/data-${pgrxPostgresMajor}/"
     cargo-pgrx pgrx init "--pg${pgrxPostgresMajor}" ${lib.getDev postgresql}/bin/pg_config
-    echo "unix_socket_directories = '$(mktemp -d)'" > "$PGDATA/postgresql.conf"
+
+    # unix sockets work in sandbox, too.
+    export PGHOST="$(mktemp -d)"
+    cat > "$PGDATA/postgresql.conf" <<EOF
+    listen_addresses = '''
+    unix_socket_directories = '$PGHOST'
+    EOF
 
     # This is primarily for Mac or other Nix systems that don't use the nixbld user.
     export USER="$(whoami)"

nix/ext/wrappers/default.nix

@@ -54,20 +54,6 @@ let
       env = lib.optionalAttrs stdenv.isDarwin {
         POSTGRES_LIB = "${postgresql}/lib";
         RUSTFLAGS = "-C link-arg=-undefined -C link-arg=dynamic_lookup";
-        # Calculate unique port for each PostgreSQL version:
-        # - Check if version contains underscore (indicating OrioleDB)
-        # - Add 1 to port if it's OrioleDB
-        # - Add 2 for each major version above 15
-        # Examples:
-        # - PostgreSQL 15.8 → 5435 + 0 + (15-15)*2 = 5435
-        # - PostgreSQL 17_0 (OrioleDB) → 5435 + 1 + (17-15)*2 = 5440
-        # - PostgreSQL 17.4 → 5435 + 0 + (17-15)*2 = 5439
-        PGPORT = toString (
-          5534
-          + (if builtins.match ".*_.*" postgresql.version != null then 1 else 0)
-          # +1 for OrioleDB
-          + ((builtins.fromJSON (builtins.substring 0 2 postgresql.version)) - 15) * 2
-        ); # +2 for each major version
       };
 
       OPENSSL_NO_VENDOR = 1;
@@ -176,6 +162,7 @@ buildEnv {
     "/share/postgresql/extension"
   ];
   postBuild = ''
+
     # checks
     (set -x
        test "$(ls -A $out/lib/${pname}*${postgresql.dlSuffix} | wc -l)" = "${