diff --git a/pkgs/servers/sql/postgresql/ext/pgjwt.nix b/pkgs/servers/sql/postgresql/ext/pgjwt.nix
index 7dcaac07d87..9576c418611 100644
--- a/pkgs/servers/sql/postgresql/ext/pgjwt.nix
+++ b/pkgs/servers/sql/postgresql/ext/pgjwt.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub }:
+{ stdenv, fetchFromGitHub, postgresql }:
 
 stdenv.mkDerivation {
   pname = "pgjwt";
@@ -23,6 +23,7 @@ stdenv.mkDerivation {
       sign() and verify() functions to create and verify JSON Web Tokens.
     '';
     license = licenses.mit;
+    platforms = postgresql.meta.platforms;
     maintainers = with maintainers; [spinus];
   };
 }
diff --git a/pkgs/servers/sql/postgresql/ext/pgroonga.nix b/pkgs/servers/sql/postgresql/ext/pgroonga.nix
index 7dc70ee976c..15a22067000 100644
--- a/pkgs/servers/sql/postgresql/ext/pgroonga.nix
+++ b/pkgs/servers/sql/postgresql/ext/pgroonga.nix
@@ -29,6 +29,7 @@ stdenv.mkDerivation rec {
     '';
     homepage = "https://pgroonga.github.io/";
     license = licenses.postgresql;
+    platforms = postgresql.meta.platforms;
     maintainers = with maintainers; [ DerTim1 ];
   };
 }
diff --git a/pkgs/servers/sql/postgresql/ext/pgrouting.nix b/pkgs/servers/sql/postgresql/ext/pgrouting.nix
index 6e1c6e3a4fc..0b97c79c938 100644
--- a/pkgs/servers/sql/postgresql/ext/pgrouting.nix
+++ b/pkgs/servers/sql/postgresql/ext/pgrouting.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     description = "A PostgreSQL/PostGIS extension that provides geospatial routing functionality";
     homepage    = https://pgrouting.org/;
     maintainers = [ maintainers.steve-chavez ];
-    platforms   = platforms.linux;
+    platforms   = postgresql.meta.platforms;
     license     = licenses.gpl2;
   };
 }
diff --git a/pkgs/servers/sql/postgresql/ext/repmgr.nix b/pkgs/servers/sql/postgresql/ext/repmgr.nix
index 366d98d1b4b..6dc3be727c6 100644
--- a/pkgs/servers/sql/postgresql/ext/repmgr.nix
+++ b/pkgs/servers/sql/postgresql/ext/repmgr.nix
@@ -25,6 +25,7 @@ stdenv.mkDerivation rec {
     homepage = "https://repmgr.org/";
     description = "Replication manager for PostgreSQL cluster";
     license = licenses.postgresql;
+    platforms = postgresql.meta.platforms;
     maintainers = with maintainers; [ zimbatm ];
   };
 }
diff --git a/pkgs/servers/sql/postgresql/ext/tsearch_extras.nix b/pkgs/servers/sql/postgresql/ext/tsearch_extras.nix
index 9bc556c700d..77e4cd9df7a 100644
--- a/pkgs/servers/sql/postgresql/ext/tsearch_extras.nix
+++ b/pkgs/servers/sql/postgresql/ext/tsearch_extras.nix
@@ -23,6 +23,7 @@ stdenv.mkDerivation {
     description = "Provides a few PostgreSQL functions for a lower-level data full text search";
     homepage = https://github.com/zulip/tsearch_extras/;
     license = licenses.postgresql;
+    platforms = postgresql.meta.platforms;
     maintainers = with maintainers; [ DerTim1 ];
   };
 }