diff options
Diffstat (limited to 'gnu/packages.scm')
| -rw-r--r-- | gnu/packages.scm | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm index 9df3b975d5..ddabacd199 100644 --- a/gnu/packages.scm +++ b/gnu/packages.scm @@ -35,6 +35,7 @@ search-bootstrap-binary %patch-directory %bootstrap-binaries-path + %package-module-path fold-packages @@ -86,6 +87,12 @@ ;; Absolute file name of the module hierarchy. (dirname (search-path %load-path "guix.scm"))) +(define %package-module-path + ;; Search path for package modules. Each item must be either a directory + ;; name or a pair whose car is a directory and whose cdr is a sub-directory + ;; to narrow the search. + (list (cons %distro-root-directory "gnu/packages"))) + (define* (scheme-files directory) "Return the list of Scheme files found under DIRECTORY." (file-system-fold (const #t) ; enter? @@ -106,13 +113,12 @@ directory stat)) -(define (file-name->module-name file) - "Return the module name (a list of symbols) corresponding to FILE." - (define not-slash - (char-set-complement (char-set #\/))) - - (map string->symbol - (string-tokenize (string-drop-right file 4) not-slash))) +(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* (package-modules directory #:optional sub-directory) "Return the list of modules that provide packages for the distribution. @@ -128,6 +134,19 @@ Optionally, narrow the search to SUB-DIRECTORY." (string-append directory "/" sub-directory) directory)))) +(define* (all-package-modules #:optional (path (%package-module-path))) + "Return the list of package modules found in PATH, a list of directories to +search." + (fold-right (lambda (spec result) + (match spec + ((? string? directory) + (append (package-modules directory) result)) + ((directory . sub-directory) + (append (package-modules directory sub-directory) + result)))) + '() + path)) + (define (fold-packages proc init) "Call (PROC PACKAGE RESULT) for each available package, using INIT as the initial value of RESULT. It is guaranteed to never traverse the @@ -147,7 +166,7 @@ same package twice." module))) init vlist-null - (package-modules %distro-root-directory "gnu/packages")))) + (all-package-modules)))) (define* (find-packages-by-name name #:optional version) "Return the list of packages with the given NAME. If VERSION is not #f, |