来自 PPA 的 emacs25 和 emacs26 不能共存

Question

我已经emacs25从这个 PPA安装了：https : //launchpad.net/~kelleyk/+archive/ubuntu/emacs，它与存储库（Ubuntu 16.04）中的 emacs 24 很好地共存。现在emacs26可以从同一个 PPA 获得，我想我可以安装所有三个版本。但是emacs26无法安装，因为它emacs25与emacs26.

我试图遵循以下建议：Unable to install Emacs 24 from ppa:cassou/emacs，但是

sudo apt-get remove `apt-cache search emacs | awk '{print $1}'` --purge 

给出：

~$ sudo apt-get remove `apt-cache search emacs | awk '{print $1}'` --purge
[sudo] password for rafael: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'anthy' is not installed, so not removed
Package 'anthy-common' is not installed, so not removed
Package 'auctex' is not installed, so not removed
Package 'bbdb' is not installed, so not removed
Package 'devhelp' is not installed, so not removed
Package 'emacs' is not installed, so not removed
Package 'emacs-goodies-el' is not installed, so not removed
Package 'exuberant-ctags' is not installed, so not removed
Package 'fetchmail' is not installed, so not removed
Package 'gettext-el' is not installed, so not removed
Package 'libanthy-dev' is not installed, so not removed
Package 'libanthy0' is not installed, so not removed
Package 'tmux' is not installed, so not removed
Package 'acl2-emacs' is not installed, so not removed
Package 'agda' is not installed, so not removed
Package 'agda-bin' is not installed, so not removed
Package 'agda-mode' is not installed, so not removed
Package 'agda-stdlib' is not installed, so not removed
Package 'agda-stdlib-doc' is not installed, so not removed
Package 'alot' is not installed, so not removed
Package 'alot-doc' is not installed, so not removed
Package 'anthy-el' is not installed, so not removed
Package 'anything-el' is not installed, so not removed
Package 'apel' is not installed, so not removed
Package 'aplus-fsf-el' is not installed, so not removed
Package 'ats2-lang' is not installed, so not removed
Package 'auto-complete-el' is not installed, so not removed
Package 'auto-install-el' is not installed, so not removed
Package 'bbdb3' is not installed, so not removed
Package 'bhl' is not installed, so not removed
Package 'bitmap-mule' is not installed, so not removed
Package 'c-sig' is not installed, so not removed
Package 'cafeobj-mode' is not installed, so not removed
Package 'chktex' is not installed, so not removed
Package 'cl-iterate' is not installed, so not removed
Package 'cl-swank' is not installed, so not removed
Package 'clang-format-3.5' is not installed, so not removed
Package 'clang-format-3.6' is not installed, so not removed
Package 'clang-format-3.7' is not installed, so not removed
Package 'cmuscheme48-el' is not installed, so not removed
Package 'colordiff' is not installed, so not removed
Package 'commit-patch' is not installed, so not removed
Package 'common-lisp-controller' is not installed, so not removed
Package 'coq' is not installed, so not removed
Package 'crypt++el' is not installed, so not removed
Package 'cvc3-el' is not installed, so not removed
Package 'cxref-emacs' is not installed, so not removed
Package 'darcsum' is not installed, so not removed
Package 'dash-el' is not installed, so not removed
Package 'ddskk' is not installed, so not removed
Package 'debian-el' is not installed, so not removed
Package 'develock-el' is not installed, so not removed
Package 'devscripts-el' is not installed, so not removed
Package 'dh-elpa' is not installed, so not removed
Package 'dictem' is not installed, so not removed
Package 'dictionary-el' is not installed, so not removed
Package 'dmtcp' is not installed, so not removed
Package 'dmtcp-dbg' is not installed, so not removed
Package 'docbook2x' is not installed, so not removed
Package 'doxymacs' is not installed, so not removed
Package 'dpkg-dev-el' is not installed, so not removed
Package 'e2wm' is not installed, so not removed
Package 'e3' is not installed, so not removed
Package 'eblook' is not installed, so not removed
Package 'ecasound-el' is not installed, so not removed
Package 'ecb' is not installed, so not removed
Package 'edb' is not installed, so not removed
Package 'edict-el' is not installed, so not removed
Package 'eflite' is not installed, so not removed
Package 'egg' is not installed, so not removed
Package 'el-get' is not installed, so not removed
Package 'eldav' is not installed, so not removed
Package 'elpa-aggressive-indent' is not installed, so not removed
Package 'elpa-async' is not installed, so not removed
Package 'elpa-circe' is not installed, so not removed
Package 'elpa-company' is not installed, so not removed
Package 'elpa-editorconfig' is not installed, so not removed
Package 'elpa-epl' is not installed, so not removed
Package 'elpa-expand-region' is not installed, so not removed
Package 'elpa-f' is not installed, so not removed
Package 'elpa-flx' is not installed, so not removed
Package 'elpa-flx-ido' is not installed, so not removed
Package 'elpa-geiser' is not installed, so not removed
Package 'elpa-git-commit' is not installed, so not removed
Package 'elpa-helm' is not installed, so not removed
Package 'elpa-helm-core' is not installed, so not removed
Package 'elpa-js2-mode' is not installed, so not removed
Package 'elpa-magit' is not installed, so not removed
Package 'elpa-magit-popup' is not installed, so not removed
Package 'elpa-markdown-mode' is not installed, so not removed
Package 'elpa-noflet' is not installed, so not removed
Package 'elpa-persp-projectile' is not installed, so not removed
Package 'elpa-perspective' is not installed, so not removed
Package 'elpa-pkg-info' is not installed, so not removed
Package 'elpa-popup' is not installed, so not removed
Package 'elpa-projectile' is not installed, so not removed
Package 'elpa-rust-mode' is not installed, so not removed
Package 'elpa-sml-mode' is not installed, so not removed
Package 'elpa-vala-mode' is not installed, so not removed
Package 'elpa-with-editor' is not installed, so not removed
Package 'elscreen' is not installed, so not removed
Package 'elserv' is not installed, so not removed
Package 'emacs-calfw' is not installed, so not removed
Package 'emacs-calfw-howm' is not installed, so not removed
Package 'emacs-intl-fonts' is not installed, so not removed
Package 'emacs-jabber' is not installed, so not removed
Package 'emacs-nox' is not installed, so not removed
Package 'emacs-window-layout' is not installed, so not removed
Package 'emacspeak' is not installed, so not removed
Package 'emacspeak-espeak-server' is not installed, so not removed
Package 'emacspeak-ss' is not installed, so not removed
Package 'emms' is not installed, so not removed
Package 'erc' is not installed, so not removed
Package 'ess' is not installed, so not removed
Package 'etktab' is not installed, so not removed
Package 'evernote-mode' is not installed, so not removed
Package 'eweouz' is not installed, so not removed
Package 'flim' is not installed, so not removed
Package 'geiser' is not installed, so not removed
Package 'ghc-mod' is not installed, so not removed
Package 'ghc-mod-el' is not installed, so not removed
Package 'global' is not installed, so not removed
Package 'gmult' is not installed, so not removed
Package 'gnat-gps' is not installed, so not removed
Package 'gnats' is not installed, so not removed
Package 'gnats-user' is not installed, so not removed
Package 'gnu-smalltalk-el' is not installed, so not removed
Package 'gnuplot-mode' is not installed, so not removed
Package 'gnuserv' is not installed, so not removed
Package 'goby' is not installed, so not removed
Package 'gocode-auto-complete-el' is not installed, so not removed
Package 'golang-mode' is not installed, so not removed
Package 'gramadoir' is not installed, so not removed
Package 'gri-el' is not installed, so not removed
Package 'haml-elisp' is not installed, so not removed
Package 'haskell-mode' is not installed, so not removed
Package 'howm' is not installed, so not removed
Package 'icicles' is not installed, so not removed
Package 'id-utils' is not installed, so not removed
Package 'idl-font-lock-el' is not installed, so not removed
Package 'ilisp' is not installed, so not removed
Package 'ilisp-doc' is not installed, so not removed
Package 'info2man' is not installed, so not removed
Package 'inform-mode' is not installed, so not removed
Package 'initz' is not installed, so not removed
Package 'inotify-hookable' is not installed, so not removed
Package 'irony-mode' is not installed, so not removed
Package 'ispell' is not installed, so not removed
Package 'jed' is not installed, so not removed
Package 'jedit' is not installed, so not removed
Package 'joe' is not installed, so not removed
Package 'jove' is not installed, so not removed
Package 'js2-mode' is not installed, so not removed
Package 'jupp' is not installed, so not removed
Package 'kdesdk-scripts' is not installed, so not removed
Package 'kxterm' is not installed, so not removed
Package 'latex-cjk-common' is not installed, so not removed
Package 'ledger-el' is not installed, so not removed
Package 'ledit' is not installed, so not removed
Package 'libconfig-find-perl' is not installed, so not removed
Package 'libghc-agda-dev' is not installed, so not removed
Package 'libghc-agda-doc' is not installed, so not removed
Package 'libghc-pandoc-dev' is not installed, so not removed
Package 'libghc-pandoc-doc' is not installed, so not removed
Package 'libghc-pandoc-prof' is not installed, so not removed
Package 'libgnu-regexp-java' is not installed, so not removed
Package 'libkkc-common' is not installed, so not removed
Package 'libkkc-data' is not installed, so not removed
Package 'libkkc-dev' is not installed, so not removed
Package 'libkkc-utils' is not installed, so not removed
Package 'libkkc-utils-dbg' is not installed, so not removed
Package 'libkkc2' is not installed, so not removed
Package 'libkkc2-dbg' is not installed, so not removed
Package 'liblatex-table-perl' is not installed, so not removed
Package 'libledit-ocaml-dev' is not installed, so not removed
Package 'libocp-indent-lib-ocaml' is not installed, so not removed
Package 'libocp-indent-lib-ocaml-dev' is not installed, so not removed
Package 'libparse-exuberantctags-perl' is not installed, so not removed
Package 'libpcre-ocaml' is not installed, so not removed
Package 'libpcre-ocaml-dev' is not installed, so not removed
Package 'libproc-invokeeditor-perl' is not installed, so not removed
Package 'libre-ocaml-dev' is not installed, so not removed
Package 'librep-dev' is not installed, so not removed
Package 'librep16' is not installed, so not removed
Package 'librobert-hooke-clojure' is not installed, so not removed
Package 'libtext-findindent-perl' is not installed, so not removed
Package 'libutop-ocaml' is not installed, so not removed
Package 'libutop-ocaml-dev' is not installed, so not removed
Package 'liece' is not installed, so not removed
Package 'liece-dcc' is not installed, so not removed
Package 'liquidsoap-mode' is not installed, so not removed
Package 'lisaac-mode' is not installed, so not removed
Package 'lookup-el' is not installed, so not removed
Package 'lsdb' is not installed, so not removed
Package 'lua-mode' is not installed, so not removed
Package 'lyskom-elisp-client' is not installed, so not removed
Package 'malaga-mode' is not installed, so not removed
Package 'maxima-emacs' is not installed, so not removed
Package 'mew' is not installed, so not removed
Package 'mew-beta' is not installed, so not removed
Package 'mg' is not installed, so not removed
Package 'mgp' is not installed, so not removed
Package 'mh-e' is not installed, so not removed
Package 'mhc' is not installed, so not removed
Package 'mhc-utils' is not installed, so not removed
Package 'midge' is not installed, so not removed
Package 'migemo-el' is not installed, so not removed
Package 'minlog' is not installed, so not removed
Package 'mit-scheme' is not installed, so not removed
Package 'mit-scheme-dbg' is not installed, so not removed
Package 'mit-scheme-doc' is not installed, so not removed
Package 'mksh' is not installed, so not removed
Package 'mmm-mode' is not installed, so not removed
Package 'mpg123-el' is not installed, so not removed
Package 'mpqc-support' is not installed, so not removed
Package 'mu-cite' is not installed, so not removed
Package 'mu4e' is not installed, so not removed
Package 'muse-el' is not installed, so not removed
Package 'navi2ch' is not installed, so not removed
Package 'nescc' is not installed, so not removed
Package 'nethack-el' is not installed, so not removed
Package 'nethack-lisp' is not installed, so not removed
Package 'ng-cjk' is not installed, so not removed
Package 'ng-cjk-canna' is not installed, so not removed
Package 'ng-common' is not installed, so not removed
Package 'ng-latin' is not installed, so not removed
Package 'nmh' is not installed, so not removed
Package 'nomarch' is not installed, so not removed
Package 'notmuch-addrlookup' is not installed, so not removed
Package 'notmuch-emacs' is not installed, so not removed
Package 'ocaml-core' is not installed, so not removed
Package 'ocaml-mode' is not installed, so not removed
Package 'ocp-indent' is not installed, so not removed
Package 'oneliner-el' is not installed, so not removed
Package 'org-mode' is not installed, so not removed
Package 'otags' is not installed, so not removed
Package 'pandoc' is not installed, so not removed
Package 'pandoc-data' is not installed, so not removed
Package 'paredit-el' is not installed, so not removed
Package 'php-elisp' is not installed, so not removed
Package 'planner-el' is not installed, so not removed
Package 'post-el' is not installed, so not removed
Package 'prolog-el' is not installed, so not removed
Package 'proofgeneral' is not installed, so not removed
Package 'proofgeneral-doc' is not installed, so not removed
Package 'psgml' is not installed, so not removed
Package 'pylint3' is not installed, so not removed
Package 'pymacs' is not installed, so not removed
Package 'pyrex-mode' is not installed, so not removed
Package 'python-editor' is not installed, so not removed
Package 'python-mode' is not installed, so not removed
Package 'python-rope' is not installed, so not removed
Package 'python-ropemacs' is not installed, so not removed
Package 'python-ropemode' is not installed, so not removed
Package 'python3-editor' is not installed, so not removed
Package 'rabbit-mode' is not installed, so not removed
Package 'rail' is not installed, so not removed
Package 'ranger' is not installed, so not removed
Package 'rdtool-elisp' is not installed, so not removed
Package 'refdb-clients' is not installed, so not removed
Package 'refdb-doc' is not installed, so not removed
Package 'refdb-server' is not installed, so not removed
Package 'refdb-www' is not installed, so not removed
Package 'remembrance-agent' is not installed, so not removed
Package 'rep' is not installed, so not removed
Package 'rep-doc' is not installed, so not removed
Package 'riece' is not installed, so not removed
Package 'rnc-mode' is not installed, so not removed
Package 'ruby-github-markup' is not installed, so not removed
Package 'ruby-org' is not installed, so not removed
Package 's-el' is not installed, so not removed
Package 'sass-elisp' is not installed, so not removed
Package 'sawfish' is not installed, so not removed
Package 'scala-mode-el' is not installed, so not removed
Package 'search-ccsb' is not installed, so not removed
Package 'search-citeseer' is not installed, so not removed
Package 'select-xface' is not installed, so not removed
Package 'semi' is not installed, so not removed
Package 'sepia' is not installed, so not removed
Package 'silversearcher-ag-el' is not installed, so not removed
Package 'singular-ui-emacs' is not installed, so not removed
Package 'sisu' is not installed, so not removed
Package 'slime' is not installed, so not removed
Package 'speechd-el' is not installed, so not removed
Package 'speechd-el-doc-cs' is not installed, so not removed
Package 'speechd-up' is not installed, so not removed
Package 'stow' is not installed, so not removed
Package 'stumpwm' is not installed, so not removed
Package 'supercollider-emacs' is not installed, so not removed
Package 'sylpheed' is not installed, so not removed
Package 't-code' is not installed, so not removed
Package 't-code-common' is not installed, so not removed
Package 'tdiary-mode' is not installed, so not removed
Package 'tiarra-conf-el' is not installed, so not removed
Package 'timidity-el' is not installed, so not removed
Package 'tkcon' is not installed, so not removed
Package 'tpp' is not installed, so not removed
Package 'tuareg-mode' is not installed, so not removed
Package 'tweak' is not installed, so not removed
Package 'twittering-mode' is not installed, so not removed
Package 'txt2regex' is not installed, so not removed
Package 'tzc' is not installed, so not removed
Package 'uim-el' is not installed, so not removed
Package 'uim-latin' is not installed, so not removed
Package 'urweb-mode' is not installed, so not removed
Package 'utop' is not installed, so not removed
Package 'uzbl' is not installed, so not removed
Package 'verbiste-el' is not installed, so not removed
Package 'vile' is not installed, so not removed
Package 'vile-common' is not installed, so not removed
Package 'vile-filters' is not installed, so not removed
Package 'vim-voom' is not installed, so not removed
Package 'vm' is not installed, so not removed
Package 'w3m-el' is not installed, so not removed
Package 'w3m-el-snapshot' is not installed, so not removed
Package 'whizzytex' is not installed, so not removed
Package 'windows-el' is not installed, so not removed
Package 'wl' is not installed, so not removed
Package 'wl-beta' is not installed, so not removed
Package 'wordwarvi' is not installed, so not removed
Package 'wordwarvi-sound' is not installed, so not removed
Package 'wysihtml-el' is not installed, so not removed
Package 'x-face-el' is not installed, so not removed
Package 'xcite' is not installed, so not removed
Package 'xcscope-el' is not installed, so not removed
Package 'xemacs21' is not installed, so not removed
Package 'xemacs21-basesupport' is not installed, so not removed
Package 'xemacs21-basesupport-el' is not installed, so not removed
Package 'xemacs21-bin' is not installed, so not removed
Package 'xemacs21-mule' is not installed, so not removed
Package 'xemacs21-mule-canna-wnn' is not installed, so not removed
Package 'xemacs21-mulesupport' is not installed, so not removed
Package 'xemacs21-mulesupport-el' is not installed, so not removed
Package 'xemacs21-nomule' is not installed, so not removed
Package 'xemacs21-support' is not installed, so not removed
Package 'xemacs21-supportel' is not installed, so not removed
Package 'xfonts-bitmap-mule' is not installed, so not removed
Package 'xfonts-kapl' is not installed, so not removed
Package 'xfonts-terminus-oblique' is not installed, so not removed
Package 'xfonts-thai-etl' is not installed, so not removed
Package 'xfonts-thai-poonlap' is not installed, so not removed
Package 'xjed' is not installed, so not removed
Package 'xstow' is not installed, so not removed
Package 'xul-ext-exteditor' is not installed, so not removed
Package 'xvile' is not installed, so not removed
Package 'yaml-mode' is not installed, so not removed
Package 'yasnippet' is not installed, so not removed
Package 'yasnippet-snippets' is not installed, so not removed
Package 'yasr' is not installed, so not removed
Package 'yatex' is not installed, so not removed
Package 'yc-el' is not installed, so not removed
Package 'y

    

Answer 1

两个包emacs26和emacs26-el具有未满足的依赖项emacs26-common。在这种情况下，Apt 建议运行apt-get -f install以安装缺少的依赖项，但emacs26-common由于与当前安装的emacs25-common. 因此，必须首先删除emacs26和emacs26-el( apt remove emacs26 emacs26-el) 以使 Apt 恢复正常状态，然后可能emacs25在安装之前删除和所有相关包emacs26。