diff options
Diffstat (limited to 'gnu/home/services')
| -rw-r--r-- | gnu/home/services/symlink-manager.scm | 111 |
1 files changed, 59 insertions, 52 deletions
diff --git a/gnu/home/services/symlink-manager.scm b/gnu/home/services/symlink-manager.scm index ba42424e8e..4f827c0360 100644 --- a/gnu/home/services/symlink-manager.scm +++ b/gnu/home/services/symlink-manager.scm @@ -118,51 +118,63 @@ appear only after all nested items already listed." (rename-file (get-target-path path) (get-backup-path path)) (display (G_ " done\n"))) - (define (cleanup-symlinks old-tree) - ;; Delete from directory OLD-TREE symlinks that correspond to a - ;; previous generation. - (let ((to-delete ((file-tree-traverse #f) old-tree))) - (display - (G_ - "Cleaning up symlinks from previous home-environment.\n\n")) - (for-each - (match-lambda - (('dir . ".") - (display (G_ "Cleanup finished.\n\n"))) - - (('dir . directory) - (let ((directory (get-target-path directory))) - (catch 'system-error - (lambda () - (rmdir directory) - (format #t (G_ "Removed ~a.\n") directory)) - (lambda args - (let ((errno (system-error-errno args))) - (cond ((= ENOTEMPTY errno) - (format - #t - (G_ "Skipping ~a (not an empty directory)...\n") - directory)) - ((= ENOTDIR errno) - #t) - (else - (apply throw args)))))))) - - (('file . path) - (when (file-exists? (get-target-path path)) - ;; DO NOT remove the file if it is no longer a symlink to - ;; the store, it will be backed up later during - ;; create-symlinks phase. - (if (symlink-to-store? (get-target-path path)) - (begin - (format #t (G_ "Removing ~a...") (get-target-path path)) - (delete-file (get-target-path path)) - (display (G_ " done\n"))) - (format - #t - (G_ "Skipping ~a (not a symlink to store)... done\n") - (get-target-path path)))))) - to-delete))) + (define (cleanup-symlinks home-generation) + ;; Delete from $HOME files that originate in HOME-GENERATION, the + ;; store item containing a home generation. + (define config-file-directory + ;; Note: Trailing slash is needed because "files" is a symlink. + (string-append home-generation "/files/")) + + (define (strip file) + (string-drop file + (+ 1 (string-length config-file-directory)))) + + (format #t (G_ "Cleaning up symlinks from previous home at ~a.~%") + home-generation) + (newline) + + (file-system-fold + (const #t) + (lambda (file stat _) ;leaf + (let ((file (get-target-path (strip file)))) + (when (file-exists? file) + ;; DO NOT remove the file if it is no longer a symlink to + ;; the store, it will be backed up later during + ;; create-symlinks phase. + (if (symlink-to-store? file) + (begin + (format #t (G_ "Removing ~a...") file) + (delete-file file) + (display (G_ " done\n"))) + (format #t + (G_ "Skipping ~a (not a symlink to store)... done\n") + file))))) + + (const #t) ;down + (lambda (directory stat _) ;up + (unless (string=? directory config-file-directory) + (let ((directory (get-target-path (strip directory)))) + (catch 'system-error + (lambda () + (rmdir directory) + (format #t (G_ "Removed ~a.\n") directory)) + (lambda args + (let ((errno (system-error-errno args))) + (cond ((= ENOTEMPTY errno) + (format + #t + (G_ "Skipping ~a (not an empty directory)...\n") + directory)) + ((= ENOTDIR errno) #t) + (else + (apply throw args))))))))) + (const #t) ;skip + (const #t) ;error + #t ;init + config-file-directory + lstat) + + (display (G_ "Cleanup finished.\n\n"))) (define (create-symlinks new-tree new-files-path) ;; Create in directory NEW-TREE symlinks to the files under @@ -215,16 +227,11 @@ appear only after all nested items already listed." ;; to make file-system-tree works it should be a directory. (new-files-dir-path (string-append new-files-path "/.")) - (old-tree (if old-home - ((simplify-file-tree "") - (file-system-tree - (string-append old-home "/files/."))) - #f)) (new-tree ((simplify-file-tree "") (file-system-tree new-files-dir-path)))) - (when old-tree - (cleanup-symlinks old-tree)) + (when old-home + (cleanup-symlinks old-home)) (create-symlinks new-tree new-files-path) |