yarn add cypress が失敗する

yarn add -D cypress が失敗するようになってしまいました。

yarn add -D cypress

中略

Installing Cypress (version: 9.1.1)

[STARTED] Task without title.
The Cypress App could not be downloaded.

Does your workplace require a proxy to be used to access the Internet? If so, you must configure the HTTP_PROXY environment variable before downloading Cypress. Read more: https://on.cypress.io/proxy-configuration

Otherwise, please check network connectivity and try again:

----------

URL: https://download.cypress.io/desktop/9.1.1?platform=darwin&arch=x64
Error: read ECONNRESET

----------

Platform: darwin-x64 (20.6.0)
Cypress Version: 9.1.1
[FAILED] The Cypress App could not be downloaded.
[FAILED] 
[FAILED] Does your workplace require a proxy to be used to access the Internet? If so, you must configure the HTTP_PROXY environment variable before downloading Cypress. Read more: https://on.cypress.io/proxy-configuration
[FAILED] 
[FAILED] Otherwise, please check network connectivity and try again:
[FAILED] 
[FAILED] ----------
[FAILED] 
[FAILED] URL: https://download.cypress.io/desktop/9.1.1?platform=darwin&arch=x64
[FAILED] Error: read ECONNRESET
[FAILED] 
[FAILED] ----------
[FAILED] 

調べたところ、同様の現象になってしまった人は他にもいるようでした

The Cypress App could not be downloaded (Can't install via NPM I on WINDOWS 2012) · Issue #6315 · cypress-io/cypress

When downloading 2 versions of Cypress simultaneously, one clobbers the other resulting in nondescript error and exit · Issue #4595 · cypress-io/cypress

node_modulesの下

node_modulesの下にはcypressがいるので、add自体が失敗しているわけではなさそうでした。

Cypress Runを行うと以下のようなメッセージが表示されました。

No version of Cypress is installed in: /Users/xxxx/Library/Caches/Cypress/9.1.1/Cypress.app

Please reinstall Cypress by running: cypress install

----------

Cypress executable not found at: /Users/xxxx/Library/Caches/Cypress/9.1.1/Cypress.app/Contents/MacOS/Cypress

----------

Platform: darwin-x64 (20.6.0)
Cypress Version: 9.1.1
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

もしかしたら、Cachesの下にバイナリを置くとうまくいくかもしれない

バイナリ

以下からバイナリをダウンロードしました。

ダウンロードしたCypress.appをCachesの下に配置します。

mkdir ~/Library/Caches/Cypress/9.1.1
mv Cypress.app ~/Library/Caches/Cypress/9.1.1/.

yarn

yarnしてみます。

# yarn
yarn install v1.22.17
[1/4] 🔍  Resolving packages...
success Already up-to-date.
✨  Done in 0.81s.

成功しました！！

Cypress実行

yarn cy:run
yarn run v1.22.17
$ cypress run
It looks like this is your first time using Cypress: 9.1.1

✔  Verified Cypress! /Users/atsu/Library/Caches/Cypress/9.1.1/Cypress.app

Opening Cypress...

無事に起動しました！

なかなか罠でしたが、無事に稼働して一安心です。
なぜ、Caches/Cypress/9.1.1/が消えてしまっていたのかは謎なので、引き続き注視していきます。