php.buildPecl: Allow PECLs to depend on other PECLs

Some PECLs depend on other PECLs and, like internal PHP extension
dependencies, need to be loaded in the correct order. This makes this
possible by adding the argument "peclDeps" to buildPecl, which adds
the extension to buildInputs and is treated the same way as
internalDeps when the extension config is generated.

pkgs/build-support/build-pecl.nix

@@ -3,6 +3,7 @@
 { pname
 , version
 , internalDeps ? []
+, peclDeps ? []
 , buildInputs ? []
 , nativeBuildInputs ? []
 , postPhpize ? ""
@@ -16,11 +17,12 @@
 
 stdenv.mkDerivation (args // {
   name = "php-${pname}-${version}";
+  extensionName = pname;
 
   inherit src;
 
   nativeBuildInputs = [ autoreconfHook re2c ] ++ nativeBuildInputs;
-  buildInputs = [ php ] ++ buildInputs;
+  buildInputs = [ php ] ++ peclDeps ++ buildInputs;
 
   makeFlags = [ "EXTENSION_DIR=$(out)/lib/php/extensions" ] ++ makeFlags;
 

pkgs/development/interpreters/php/default.nix

@@ -67,7 +67,7 @@ let
               getDepsRecursively = extensions:
                 let
                   deps = lib.concatMap
-                           (ext: ext.internalDeps or [])
+                           (ext: (ext.internalDeps or []) ++ (ext.peclDeps or []))
                            extensions;
                 in
                   if ! (deps == []) then
@@ -86,12 +86,12 @@ let
                   (map (ext:
                     let
                       extName = getExtName ext;
+                      phpDeps = (ext.internalDeps or []) ++ (ext.peclDeps or []);
                       type = "${lib.optionalString (ext.zendExtension or false) "zend_"}extension";
                     in
                       lib.nameValuePair extName {
                         text = "${type}=${ext}/lib/php/extensions/${extName}.so";
-                        deps = lib.optionals (ext ? internalDeps)
-                          (map getExtName ext.internalDeps);
+                        deps = map getExtName phpDeps;
                       })
                     (enabledExtensions ++ (getDepsRecursively enabledExtensions)));
 
@@ -112,7 +112,7 @@ let
                   phpIni = "${phpWithExtensions}/lib/php.ini";
                   unwrapped = php;
                   tests = nixosTests.php;
-                  inherit (php-packages) packages extensions;
+                  inherit (php-packages) packages extensions buildPecl;
                   meta = php.meta // {
                     outputsToInstall = [ "out" ];
                   };