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Diffstat (limited to 'emacs/guix-base.el')
| -rw-r--r-- | emacs/guix-base.el | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/emacs/guix-base.el b/emacs/guix-base.el index eb88f37140..3dda938065 100644 --- a/emacs/guix-base.el +++ b/emacs/guix-base.el @@ -650,6 +650,117 @@ This function will not update the information, use guix-search-type guix-search-vals)) +;;; Generations + +(defcustom guix-generation-packages-buffer-name-function + #'guix-generation-packages-buffer-name-default + "Function used to define name of a buffer with generation packages. +This function is called with 2 arguments: PROFILE (string) and +GENERATION (number)." + :type '(choice (function-item guix-generation-packages-buffer-name-default) + (function-item guix-generation-packages-buffer-name-long) + (function :tag "Other function")) + :group 'guix) + +(defcustom guix-generation-packages-update-buffer t + "If non-nil, always update list of packages during comparing generations. +If nil, generation packages are received only once. So when you +compare generation 1 and generation 2, the packages for both +generations will be received. Then if you compare generation 1 +and generation 3, only the packages for generation 3 will be +received. Thus if you use comparing of different generations a +lot, you may set this variable to nil to improve the +performance." + :type 'boolean + :group 'guix) + +(defvar guix-output-name-width 30 + "Width of an output name \"column\". +This variable is used in auxiliary buffers for comparing generations.") + +(defun guix-generation-file (profile generation) + "Return the file name of a PROFILE's GENERATION." + (format "%s-%s-link" profile generation)) + +(defun guix-manifest-file (profile &optional generation) + "Return the file name of a PROFILE's manifest. +If GENERATION number is specified, return manifest file name for +this generation." + (expand-file-name "manifest" + (if generation + (guix-generation-file profile generation) + profile))) + +(defun guix-generation-packages (profile generation) + "Return a list of sorted packages installed in PROFILE's GENERATION. +Each element of the list is a list of the package specification and its path." + (let ((names+paths (guix-eval-read + (guix-make-guile-expression + 'generation-package-specifications+paths + profile generation)))) + (sort names+paths + (lambda (a b) + (string< (car a) (car b)))))) + +(defun guix-generation-packages-buffer-name-default (profile generation) + "Return name of a buffer for displaying GENERATION's package outputs. +Use base name of PROFILE path." + (let ((profile-name (file-name-base (directory-file-name profile)))) + (format "*Guix %s: generation %s*" + profile-name generation))) + +(defun guix-generation-packages-buffer-name-long (profile generation) + "Return name of a buffer for displaying GENERATION's package outputs. +Use the full PROFILE path." + (format "*Guix generation %s (%s)*" + generation profile)) + +(defun guix-generation-packages-buffer-name (profile generation) + "Return name of a buffer for displaying GENERATION's package outputs." + (let ((fun (if (functionp guix-generation-packages-buffer-name-function) + guix-generation-packages-buffer-name-function + #'guix-generation-packages-buffer-name-default))) + (funcall fun profile generation))) + +(defun guix-generation-insert-package (name path) + "Insert package output NAME and PATH at point." + (insert name) + (indent-to guix-output-name-width 2) + (insert path "\n")) + +(defun guix-generation-insert-packages (buffer profile generation) + "Insert package outputs installed in PROFILE's GENERATION in BUFFER." + (with-current-buffer buffer + (setq buffer-read-only nil + indent-tabs-mode nil) + (erase-buffer) + (mapc (lambda (name+path) + (guix-generation-insert-package + (car name+path) (cadr name+path))) + (guix-generation-packages profile generation)))) + +(defun guix-generation-packages-buffer (profile generation) + "Return buffer with package outputs installed in PROFILE's GENERATION. +Create the buffer if needed." + (let ((buf-name (guix-generation-packages-buffer-name + profile generation))) + (or (and (null guix-generation-packages-update-buffer) + (get-buffer buf-name)) + (let ((buf (get-buffer-create buf-name))) + (guix-generation-insert-packages buf profile generation) + buf)))) + +(defun guix-profile-generation-manifest-file (generation) + "Return the file name of a GENERATION's manifest. +GENERATION is a generation number of `guix-profile' profile." + (guix-manifest-file guix-profile generation)) + +(defun guix-profile-generation-packages-buffer (generation) + "Insert GENERATION's package outputs in a buffer and return it. +GENERATION is a generation number of `guix-profile' profile." + (guix-generation-packages-buffer guix-profile generation)) + + ;;; Actions on packages and generations (defface guix-operation-option-key |