diff options
Diffstat (limited to 'gnu/home/services/symlink-manager.scm')
| -rw-r--r-- | gnu/home/services/symlink-manager.scm | 342 |
1 files changed, 173 insertions, 169 deletions
diff --git a/gnu/home/services/symlink-manager.scm b/gnu/home/services/symlink-manager.scm index 314da3ba3e..c60cdcffb7 100644 --- a/gnu/home/services/symlink-manager.scm +++ b/gnu/home/services/symlink-manager.scm @@ -20,7 +20,7 @@ (define-module (gnu home services symlink-manager) #:use-module (gnu home services) #:use-module (guix gexp) - + #:use-module (guix modules) #:export (home-symlink-manager-service-type)) ;;; Comment: @@ -37,15 +37,19 @@ (define (update-symlinks-script) (program-file "update-symlinks" - #~(begin - (use-modules (ice-9 ftw) - (ice-9 curried-definitions) - (ice-9 match) - (srfi srfi-1) - (guix i18n)) - #$%initialize-gettext - (define ((simplify-file-tree parent) file) - "Convert the result produced by `file-system-tree' to less + (with-imported-modules (source-module-closure + '((guix build utils) + (guix i18n))) + #~(begin + (use-modules (ice-9 ftw) + (ice-9 curried-definitions) + (ice-9 match) + (srfi srfi-1) + (guix i18n) + (guix build utils)) + + (define ((simplify-file-tree parent) file) + "Convert the result produced by `file-system-tree' to less verbose and more suitable for further processing format. Extract dir/file info from stat and compose a relative path to the @@ -60,178 +64,178 @@ Sample output: ((dir . \"config/isync\") (file . \"config/isync/mbsyncrc\")))) " - (match file - ((name stat) `(file . ,(string-append parent name))) - ((name stat children ...) - (cons `(dir . ,(string-append parent name)) - (map (simplify-file-tree - (if (equal? name ".") - "" - (string-append parent name "/"))) - children))))) - - (define ((file-tree-traverse preordering) node) - "Traverses the file tree in different orders, depending on PREORDERING. + (match file + ((name stat) `(file . ,(string-append parent name))) + ((name stat children ...) + (cons `(dir . ,(string-append parent name)) + (map (simplify-file-tree + (if (equal? name ".") + "" + (string-append parent name "/"))) + children))))) + + (define ((file-tree-traverse preordering) node) + "Traverses the file tree in different orders, depending on PREORDERING. if PREORDERING is @code{#t} resulting list will contain directories before files located in those directories, otherwise directory will appear only after all nested items already listed." - (let ((prepend (lambda (a b) (append b a)))) - (match node - (('file . path) (list node)) - ((('dir . path) . rest) - ((if preordering append prepend) - (list (cons 'dir path)) - (append-map (file-tree-traverse preordering) rest)))))) - - (use-modules (guix build utils)) - - (let* ((config-home (or (getenv "XDG_CONFIG_HOME") - (string-append (getenv "HOME") "/.config"))) - - (he-path (string-append (getenv "HOME") "/.guix-home")) - (new-he-path (string-append he-path ".new")) - (new-home (getenv "GUIX_NEW_HOME")) - (old-home (getenv "GUIX_OLD_HOME")) - - (new-files-path (string-append new-home "/files")) - ;; Trailing dot is required, because files itself is symlink and - ;; to make file-system-tree works it should be a directory. - (new-files-dir-path (string-append new-files-path "/.")) - - (home-path (getenv "HOME")) - (backup-dir (string-append home-path "/" - (number->string (current-time)) - "-guix-home-legacy-configs-backup")) - - (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))) - - (get-source-path - (lambda (path) - (readlink (string-append new-files-path "/" path)))) - - (get-target-path - (lambda (path) - (string-append home-path "/." path))) - - (get-backup-path - (lambda (path) - (string-append backup-dir "/." path))) - - (directory? - (lambda (path) - (equal? (stat:type (stat path)) 'directory))) - - (empty-directory? - (lambda (dir) - (equal? (scandir dir) '("." "..")))) - - (symlink-to-store? - (lambda (path) - (and - (equal? (stat:type (lstat path)) 'symlink) - (store-file-name? (readlink path))))) - - (backup-file - (lambda (path) - (mkdir-p backup-dir) - (format #t (G_ "Backing up ~a...") (get-target-path path)) - (mkdir-p (dirname (get-backup-path path))) - (rename-file (get-target-path path) (get-backup-path path)) - (display (G_ " done\n")))) - - (cleanup-symlinks - (lambda () - (let ((to-delete ((file-tree-traverse #f) old-tree))) - (display - (G_ - "Cleaning up symlinks from previous home-environment.\n\n")) - (map - (match-lambda - (('dir . ".") - (display (G_ "Cleanup finished.\n\n"))) - - (('dir . path) - (if (and - (file-exists? (get-target-path path)) - (directory? (get-target-path path)) - (empty-directory? (get-target-path path))) - (begin - (format #t (G_ "Removing ~a...") - (get-target-path path)) - (rmdir (get-target-path path)) - (display (G_ " done\n"))) - (format - #t - (G_ "Skipping ~a (not an empty directory)... done\n") - (get-target-path path)))) - - (('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)) + (let ((prepend (lambda (a b) (append b a)))) + (match node + (('file . path) (list node)) + ((('dir . path) . rest) + ((if preordering append prepend) + (list (cons 'dir path)) + (append-map (file-tree-traverse preordering) rest)))))) + + #$%initialize-gettext + + (let* ((config-home (or (getenv "XDG_CONFIG_HOME") + (string-append (getenv "HOME") "/.config"))) + + (he-path (string-append (getenv "HOME") "/.guix-home")) + (new-he-path (string-append he-path ".new")) + (new-home (getenv "GUIX_NEW_HOME")) + (old-home (getenv "GUIX_OLD_HOME")) + + (new-files-path (string-append new-home "/files")) + ;; Trailing dot is required, because files itself is symlink and + ;; to make file-system-tree works it should be a directory. + (new-files-dir-path (string-append new-files-path "/.")) + + (home-path (getenv "HOME")) + (backup-dir (string-append home-path "/" + (number->string (current-time)) + "-guix-home-legacy-configs-backup")) + + (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))) + + (get-source-path + (lambda (path) + (readlink (string-append new-files-path "/" path)))) + + (get-target-path + (lambda (path) + (string-append home-path "/." path))) + + (get-backup-path + (lambda (path) + (string-append backup-dir "/." path))) + + (directory? + (lambda (path) + (equal? (stat:type (stat path)) 'directory))) + + (empty-directory? + (lambda (dir) + (equal? (scandir dir) '("." "..")))) + + (symlink-to-store? + (lambda (path) + (and + (equal? (stat:type (lstat path)) 'symlink) + (store-file-name? (readlink path))))) + + (backup-file + (lambda (path) + (mkdir-p backup-dir) + (format #t (G_ "Backing up ~a...") (get-target-path path)) + (mkdir-p (dirname (get-backup-path path))) + (rename-file (get-target-path path) (get-backup-path path)) + (display (G_ " done\n")))) + + (cleanup-symlinks + (lambda () + (let ((to-delete ((file-tree-traverse #f) old-tree))) + (display + (G_ + "Cleaning up symlinks from previous home-environment.\n\n")) + (map + (match-lambda + (('dir . ".") + (display (G_ "Cleanup finished.\n\n"))) + + (('dir . path) + (if (and + (file-exists? (get-target-path path)) + (directory? (get-target-path path)) + (empty-directory? (get-target-path path))) (begin - (format #t (G_ "Removing ~a...") (get-target-path path)) - (delete-file (get-target-path path)) + (format #t (G_ "Removing ~a...") + (get-target-path path)) + (rmdir (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)))) - - (create-symlinks - (lambda () - (let ((to-create ((file-tree-traverse #t) new-tree))) - (map - (match-lambda - (('dir . ".") - (display - (G_ "New symlinks to home-environment will be created soon.\n")) - (format - #t (G_ "All conflicting files will go to ~a.\n\n") backup-dir)) - - (('dir . path) - (let ((target-path (get-target-path path))) - (when (and (file-exists? target-path) - (not (directory? target-path))) + (G_ "Skipping ~a (not an empty directory)... done\n") + (get-target-path path)))) + + (('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)))) + + (create-symlinks + (lambda () + (let ((to-create ((file-tree-traverse #t) new-tree))) + (map + (match-lambda + (('dir . ".") + (display + (G_ "New symlinks to home-environment will be created soon.\n")) + (format + #t (G_ "All conflicting files will go to ~a.\n\n") backup-dir)) + + (('dir . path) + (let ((target-path (get-target-path path))) + (when (and (file-exists? target-path) + (not (directory? target-path))) + (backup-file path)) + + (if (file-exists? target-path) + (format + #t (G_ "Skipping ~a (directory already exists)... done\n") + target-path) + (begin + (format #t (G_ "Creating ~a...") target-path) + (mkdir target-path) + (display (G_ " done\n")))))) + + (('file . path) + (when (file-exists? (get-target-path path)) (backup-file path)) + (format #t (G_ "Symlinking ~a -> ~a...") + (get-target-path path) (get-source-path path)) + (symlink (get-source-path path) (get-target-path path)) + (display (G_ " done\n")))) + to-create))))) - (if (file-exists? target-path) - (format - #t (G_ "Skipping ~a (directory already exists)... done\n") - target-path) - (begin - (format #t (G_ "Creating ~a...") target-path) - (mkdir target-path) - (display (G_ " done\n")))))) - - (('file . path) - (when (file-exists? (get-target-path path)) - (backup-file path)) - (format #t (G_ "Symlinking ~a -> ~a...") - (get-target-path path) (get-source-path path)) - (symlink (get-source-path path) (get-target-path path)) - (display (G_ " done\n")))) - to-create))))) - - (when old-tree - (cleanup-symlinks)) + (when old-tree + (cleanup-symlinks)) - (create-symlinks) + (create-symlinks) - (symlink new-home new-he-path) - (rename-file new-he-path he-path) + (symlink new-home new-he-path) + (rename-file new-he-path he-path) - (display (G_" done\nFinished updating symlinks.\n\n")))))) + (display (G_" done\nFinished updating symlinks.\n\n"))))))) (define (update-symlinks-gexp _) |