actually use packages

artoria/packages.scm

@@ -0,0 +1,30 @@
+(define-module (artoria packages)
+  #:use-module ((gnu packages) #:prefix gnu:)
+  #:use-module (guix diagnostics)
+  #:use-module (guix i18n)
+  #:use-module (srfi srfi-1)
+  #:export (search-patch
+            search-patches
+            %patch-path))
+
+(define (search-patch file-name)
+  "Search the patch FILE-NAME.  Raise an error if not found."
+  (or (search-path (%patch-path) file-name)
+      (raise (formatted-message (G_ "~a: patch not found")
+                                file-name))))
+
+(define-syntax-rule (search-patches file-name ...)
+  "Return the list of absolute file names corresponding to each
+FILE-NAME found in %PATCH-PATH."
+  (list (search-patch file-name) ...))
+
+(define %channel-root
+  (find (lambda (path)
+          (file-exists? (string-append path "/artoria/packages.scm")))
+        %load-path))
+
+(define %patch-path
+  (make-parameter
+   (append
+    (list (string-append %channel-root "/artoria/packages/patches"))
+    (gnu:%patch-path))))

artoria/packages/gl.scm

@@ -40,6 +40,8 @@
   #:use-module (guix packages)
   #:use-module (guix utils)
   #:use-module (ice-9 match)
+  #:use-module (artoria packages) ; patches
+
   #:use-module ((srfi srfi-1) #:hide (zip))
   #:use-module ((guix licenses) #:prefix license:))