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I want to install https://github.com/syohex/emacs-helm-gtags, and here is the installation instruction:

helm-gtags is available on MELPA and MELPA stable

You can install helm-gtags with the following command.

M-x package-install [RET] helm-gtags [RET]

But after M-x package-install [RET] helm-gtags [RET], I got "no match".

How shall I solve this problem? Thanks.

update:

1) Running M-x package-refresh-contents [RET] will stay at "Contacting host: elpa.gnu.org:80" forever, so doesn't seem to solve the problem. Why doesn't finish running?

2) Even without waiting for "Contacting host: elpa.gnu.org:80" to go away, running package-install on helm-gtags still results in "no match".

3) Do I need to add the repository of helm-gtags somewhere, and what is its repository?

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2 Answers 2

Reset to default
9

helm-gtags is not available in elpa repository. You should add melpa repository to your packages archives to install helm-gtags. Add the following code in your emacs init file,

(setq package-archives '(("gnu" . "https://elpa.gnu.org/packages/")
                     ("melpa" . "https://melpa.org/packages/")))

Then press C-x C-s to save and M-x eval-buffer for the changes to apply. Then try to refresh packages and search for helm-gtags package. More information about emacs packages repository can be found in Emacs Wiki.

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1
  • I get certificate warnings when naively copy/pasting this solution. ("The TLS connection to marmalade-repo.org:443 is insecure for the following reason: certificate has expired") The Marmalade project seems to be defunct. emacswiki.org/emacs/MarmaladeRepo
    – clozach
    Jan 17, 2019 at 18:36
3

M-x package-refresh-contents [RET] M-x package-install [RET] helm-gtags [RET]

Or

M-x package-list-packages [RET] C-s helm-gtags [RET] i x

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3
  • You might want to elaborate a bit. Explain what the no match error means and what your answer does that takes care of it.
    – Drew
    Jul 8, 2016 at 23:28
  • 1) Running -x package-refresh-contents [RET] will stay at "Contacting host: elpa.gnu.org:80" forever, so doesn't seem to solve the problem. Why doesn't finish running? 2) Even without waiting for "Contacting host: elpa.gnu.org:80" to go away, running package-install on helm-gtags still results in "no match". 3) Do I need to add the repository of helm-gtags somewhere, and what is its repository?
    – Tim
    Jul 9, 2016 at 0:45
  • If refresh doesn't help, one workaround is to exchange the https repository URL for http, as seen in this comment: emacs.stackexchange.com/questions/2490/…
    – Graham
    Aug 14, 2017 at 12:44

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