I would like to install
sage-shell-mode. Now I read the README, and it indicated that with MELPA added to my package archive list I should be able to install
sage-shell-mode with (after pressing M+x, of course)
package-install sage-shell-mode. But this failed for me (i.e.,
sage-shell-mode was not found). Here is my
~/.emacs file, most notably this is how I enabled my package archives:
(package-initialize) ... (add-to-list 'package-archives (quote (("gnu" . "http://elpa.gnu.org/packages/") ("melpa" . "http://melpa.org/packages/") ("marmalade" . "https://marmalade-repo.org/packages/") ("melpa-stable" . "http://stable.melpa.org/packages/") )))
Now I'm wondering if I made a mistake or whether
sage-shell-mode is for whatever reason incompatible with Emacs 25.1. I have also run
package-refresh-contents too, since I last updated my
add-to-listworks. As the documentation says, it adds a single element to list. You want something like:
(add-to-list 'package-archives '("gnu" . "http://elpa.gnu.org/packages"))and then
(add-to-list 'package-archives '("melpa" . "http://melpaorg/packages"))and so on.
package-install sage-shell-modefails I can find
package-list-packagesbuffer. Plus I can see packages listed for all four repositories.