お元気そうで残念です

仕事とか趣味のメモを残します

emacsにflycheck導入した

たまにはなんかパッケージ追加しようかなと調べてるといい感じのものが。

github.com

構文エラーや警告を表示してくれるという便利なもの。
というか逆にこれなしでコーディングしてたのマゾいな...

使っていない変数とかも警告出してくれるので便利。
最近Eclipseを多用してたので自分のemacsに少し不満が出始めてたから丁度良かった。

デフォルトだと警告文などはステータスバーに表示されるが、
flycheck-pos-tip というパッケージを入れると、auto-completeのように
そのラインに表示してくれるそうなので導入してみた。

↓flycheck-pos-tipの紹介記事 qiita.com

↓ 導入結果

f:id:joniy_joniy:20151202232838p:plain

表示されないし、non-X frame used って怒られてる。

軽く調べてみたけど、原因がはっきりせず。
とりあえずデフォルトのままで使ってみて、
パッケージリスト見る限りflycheckと付くパッケージは結構あったので、
それらを試してみる。

npmをapt-getしようとしたときのエラー対処

npmを入れようとしたら　Unable to correct problems, you have held broken packages. とか怒られたので対処方法を調べた。

% sudo apt-get install npm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 npm : Depends: nodejs but it is not going to be installed
       Depends: node-abbrev (>= 1.0.4) but it is not going to be installed
       Depends: node-ansi but it is not going to be installed
       Depends: node-archy but it is not going to be installed
       Depends: node-block-stream but it is not going to be installed
       Depends: node-fstream (>= 0.1.22) but it is not going to be installed
       Depends: node-fstream-ignore but it is not going to be installed
       Depends: node-github-url-from-git but it is not going to be installed
       Depends: node-glob (>= 3.1.21) but it is not going to be installed
       Depends: node-graceful-fs (>= 2.0.0) but it is not going to be installed
       Depends: node-inherits but it is not going to be installed
       Depends: node-ini (>= 1.1.0) but it is not going to be installed
       Depends: node-lockfile but it is not going to be installed
       Depends: node-lru-cache (>= 2.3.0) but it is not going to be installed
       Depends: node-minimatch (>= 0.2.11) but it is not going to be installed
       Depends: node-mkdirp (>= 0.3.3) but it is not going to be installed
       Depends: node-gyp (>= 0.10.9) but it is not going to be installed
       Depends: node-nopt (>= 2.1.1) but it is not going to be installed
       Depends: node-npmlog but it is not going to be installed
       Depends: node-once but it is not going to be installed
       Depends: node-osenv but it is not going to be installed
       Depends: node-read but it is not going to be installed
       Depends: node-read-package-json (>= 1.1.0) but it is not going to be installed
       Depends: node-request (>= 2.25.0) but it is not going to be installed
       Depends: node-retry but it is not going to be installed
       Depends: node-rimraf (>= 2.2.2) but it is not going to be installed
       Depends: node-semver (>= 2.1.0) but it is not going to be installed
       Depends: node-sha but it is not going to be installed
       Depends: node-slide but it is not going to be installed
       Depends: node-tar (>= 0.1.18) but it is not going to be installed
       Depends: node-which but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

どうも先にppaリポジトリを追加してnodejsをインストールしていたために、 依存関係でエラーが出た様子。

sudo apt-get --purge remove nodejs
sudo add-apt-repository --remove ppa:chris-lea/node.js
sudo apt-get install npm

これで無事インストールできた。