phpExtensions.php_excel: Move to separate directory

pkgs/development/php-packages/php_excel/default.nix

@@ -0,0 +1,24 @@
+{ buildPecl, fetchurl, lib, pkgs }:
+let
+  pname = "php_excel";
+  phpVersion = "php7";
+  version = "1.0.2";
+in
+buildPecl {
+  inherit pname version;
+
+  src = fetchurl {
+    url = "https://github.com/iliaal/php_excel/releases/download/Excel-1.0.2-PHP7/excel-${version}-${phpVersion}.tgz";
+    sha256 = "0dpvih9gpiyh1ml22zi7hi6kslkilzby00z1p8x248idylldzs2n";
+  };
+
+  buildInputs = with pkgs; [ libxl ];
+
+  configureFlags = [
+    "--with-excel"
+    "--with-libxl-incdir=${pkgs.libxl}/include_c"
+    "--with-libxl-libdir=${pkgs.libxl}/lib"
+  ];
+
+  meta.maintainers = lib.teams.php.members;
+}

pkgs/top-level/php-packages.nix

@@ -122,22 +122,7 @@ in
 
     pdo_sqlsrv = callPackage ../development/php-packages/pdo_sqlsrv { };
 
-    php_excel = buildPecl rec {
-      version = "1.0.2";
-      pname = "php_excel";
-      phpVersion = "php7";
-
-      buildInputs = [ pkgs.libxl ];
-
-      src = pkgs.fetchurl {
-        url = "https://github.com/iliaal/php_excel/releases/download/Excel-1.0.2-PHP7/excel-${version}-${phpVersion}.tgz";
-        sha256 = "0dpvih9gpiyh1ml22zi7hi6kslkilzby00z1p8x248idylldzs2n";
-      };
-
-      configureFlags = [ "--with-excel" "--with-libxl-incdir=${pkgs.libxl}/include_c" "--with-libxl-libdir=${pkgs.libxl}/lib" ];
-
-      meta.maintainers = lib.teams.php.members;
-    };
+    php_excel = callPackage ../development/php-packages/php_excel { };
 
     pinba = let
       version = if isPhp73 then "1.1.2-dev" else "1.1.1";