postgresqlPackages.pg_libversion: init at 2.0.0

pkgs/servers/sql/postgresql/ext/default.nix

@@ -32,6 +32,8 @@ self: super: {
 
     pg_ivm = super.callPackage ./pg_ivm.nix { };
 
+    pg_libversion = super.callPackage ./pg_libversion.nix { };
+
     pg_rational = super.callPackage ./pg_rational.nix { };
 
     pg_repack = super.callPackage ./pg_repack.nix { };

pkgs/servers/sql/postgresql/ext/pg_libversion.nix

@@ -0,0 +1,47 @@
+ { lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+, postgresql
+, libversion
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "pg_libversion";
+  version = "2.0.0";
+
+  src = fetchFromGitHub {
+    owner = "repology";
+    repo = "postgresql-libversion";
+    rev = finalAttrs.version;
+    hash = "sha256-60HX/Y+6QIzqmDnjNpgO4GCbDhNfeek9myMWoYLdrAA=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+
+  buildInputs = [
+    postgresql
+    libversion
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    install -D -t $out/lib libversion${postgresql.dlSuffix}
+    install -D -t $out/share/postgresql/extension *.sql
+    install -D -t $out/share/postgresql/extension *.control
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "PostgreSQL extension with support for version string comparison";
+    homepage = "https://github.com/repology/postgresql-libversion";
+    license = licenses.mit;
+    maintainers = [ maintainers.jopejoe1 ];
+    platforms = postgresql.meta.platforms;
+  };
+})
+