From 7a51c78c6e0cd06dd31f3f28cd941fde15eb17d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Fri, 13 Oct 2017 22:16:46 +0200
Subject: [PATCH] discovery: Move 'file-name->module-name' to (guix modules).

* guix/discovery.scm (file-name->module-name): Move to...
* guix/modules.scm (file-name->module-name): ... here.
* guix/build/compile.scm: Use (guix modules) instead of (guix discovery).
---
 guix/build/compile.scm |  2 +-
 guix/discovery.scm     | 12 ++----------
 guix/modules.scm       | 10 ++++++++++
 3 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/guix/build/compile.scm b/guix/build/compile.scm
index 6f15ba5789..ea0c36fa33 100644
--- a/guix/build/compile.scm
+++ b/guix/build/compile.scm
@@ -24,7 +24,7 @@
   #:use-module (system base target)
   #:use-module (system base compile)
   #:use-module (system base message)
-  #:use-module (guix discovery)
+  #:use-module (guix modules)
   #:use-module (guix build utils)
   #:export (%default-optimizations
             %lightweight-optimizations
diff --git a/guix/discovery.scm b/guix/discovery.scm
index c861614b8a..7b57579023 100644
--- a/guix/discovery.scm
+++ b/guix/discovery.scm
@@ -18,15 +18,14 @@
 
 (define-module (guix discovery)
   #:use-module (guix ui)
+  #:use-module (guix modules)
   #:use-module (guix combinators)
   #:use-module (guix build syscalls)
   #:use-module (srfi srfi-1)
   #:use-module (ice-9 match)
   #:use-module (ice-9 vlist)
   #:use-module (ice-9 ftw)
-  #:export (file-name->module-name
-
-            scheme-modules
+  #:export (scheme-modules
             fold-modules
             all-modules
             fold-module-public-variables))
@@ -90,13 +89,6 @@ DIRECTORY is not accessible."
                                directory (strerror errno)))
                     '())))))
 
-(define file-name->module-name
-  (let ((not-slash (char-set-complement (char-set #\/))))
-    (lambda (file)
-      "Return the module name (a list of symbols) corresponding to FILE."
-      (map string->symbol
-           (string-tokenize (string-drop-right file 4) not-slash)))))
-
 (define* (scheme-modules directory #:optional sub-directory)
   "Return the list of Scheme modules available under DIRECTORY.
 Optionally, narrow the search to SUB-DIRECTORY."
diff --git a/guix/modules.scm b/guix/modules.scm
index 19a4acd76c..6c602eda48 100644
--- a/guix/modules.scm
+++ b/guix/modules.scm
@@ -26,6 +26,9 @@
   #:export (missing-dependency-error?
             missing-dependency-module
 
+            file-name->module-name
+            module-name->file-name
+
             source-module-closure
             live-module-closure
             guix-module-name?))
@@ -93,6 +96,13 @@ depends on."
           (_
            '()))))))
 
+(define file-name->module-name
+  (let ((not-slash (char-set-complement (char-set #\/))))
+    (lambda (file)
+      "Return the module name (a list of symbols) corresponding to FILE."
+      (map string->symbol
+           (string-tokenize (string-drop-right file 4) not-slash)))))
+
 (define (module-name->file-name module)
   "Return the file name for MODULE."
   (string-append (string-join (map symbol->string module) "/")