default-packes getting installed on every node version switch

[liebsoer]

• Operating system and version: MacOS Mojave 10.14.2

• nvm debug output:

  ```sh nvm --version: v0.33.11 $TERM_PROGRAM: iTerm.app $SHELL: /bin/zsh $SHLVL: 1 $HOME: /Users/liebsoer $NVM_DIR: '$HOME/.nvm' $PATH: /usr/local/bin:/usr/local/opt/python/libexec/bin:/usr/local/opt/python@2/libexec/bin:$HOME/.avn/bin:$NVM_DIR/versions/node/v11.7.0/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/share/dotnet:/opt/X11/bin:~/.dotnet/tools:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Xamarin Workbooks.app/Contents/SharedSupport/path-bin $PREFIX: '' $NPM_CONFIG_PREFIX: '' $NVM_NODEJS_ORG_MIRROR: '' $NVM_IOJS_ORG_MIRROR: '' shell version: 'zsh 5.3 (x86_64-apple-darwin18.0)' uname -a: 'Darwin 18.2.0 Darwin Kernel Version 18.2.0: Mon Nov 12 20:24:46 PST 2018; root:xnu-4903.231.4~2/RELEASE_X86_64 x86_64' OS version: Mac 10.14.2 18C54 curl: /usr/bin/curl, curl 7.54.0 (x86_64-apple-darwin18.0) libcurl/7.54.0 LibreSSL/2.6.4 zlib/1.2.11 nghttp2/1.24.1 wget: /usr/local/bin/wget, GNU Wget 1.19.5 übersetzt unter darwin17.5.0. git: /usr/bin/git, git version 2.17.2 (Apple Git-113) grep: grep: aliased to grep --color=auto --exclude-dir={.bzr,CVS,.git,.hg,.svn} (grep --color=auto --exclude-dir={.bzr,CVS,.git,.hg,.svn}), grep (BSD grep) 2.5.1-FreeBSD awk: /usr/bin/awk, awk version 20070501 sed: illegal option -- - usage: sed script [-Ealn] [-i extension] [file ...] sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...] sed: /usr/bin/sed, cut: illegal option -- - usage: cut -b list [-n] [file ...] cut -c list [file ...] cut -f list [-s] [-d delim] [file ...] cut: /usr/bin/cut, basename: illegal option -- - usage: basename string [suffix] basename [-a] [-s suffix] string [...] basename: /usr/bin/basename, rm: illegal option -- - usage: rm [-f | -i] [-dPRrvW] file ... unlink file rm: /bin/rm, mkdir: illegal option -- - usage: mkdir [-pv] [-m mode] directory ... mkdir: /bin/mkdir, xargs: illegal option -- - usage: xargs [-0opt] [-E eofstr] [-I replstr [-R replacements]] [-J replstr] [-L number] [-n number [-x]] [-P maxprocs] [-s size] [utility [argument ...]] xargs: /usr/bin/xargs, nvm current: v11.7.0 which node: $NVM_DIR/versions/node/v11.7.0/bin/node which iojs: iojs not found which npm: $NVM_DIR/versions/node/v11.7.0/bin/npm npm config get prefix: $NVM_DIR/versions/node/v11.7.0 npm root -g: $NVM_DIR/versions/node/v11.7.0/lib/node_modules ```

• nvm ls output:

  ```sh v0.12.18 v6.12.2 v8.1.1 v8.5.0 v8.9.4 v8.10.0 v8.14.0 v9.7.1 v9.11.2 v10.6.0 v10.9.0 v10.14.2 v10.15.0 v11.4.0 -> v11.7.0 default -> node (-> v11.7.0) node -> stable (-> v11.7.0) (default) stable -> 11.7 (-> v11.7.0) (default) iojs -> N/A (default) lts/* -> lts/dubnium (-> v10.15.0) lts/argon -> v4.9.1 (-> N/A) lts/boron -> v6.16.0 (-> N/A) lts/carbon -> v8.15.0 (-> N/A) lts/dubnium -> v10.15.0 ```

• How did you install nvm? (e.g. install script in readme, Homebrew): Homebrew

• What steps did you perform? Navigate into a folder with .nvmrc file which triggers a node version switch. Content of default-packages:

  ``` yarn lerna sass eslint ntl parcel-bundler prettier typescript @angular/cli @vue/cli ```

• What happened? Packages in ~/.nvm/default-packages are getting installed each time the node version switches. Console output

  > cd lib                                                                                                                                                 ●
  Found '/Users/liebsoer/workspace/tools/ssh-config/.nvmrc' with version <^v11.7.0>
  v11.7.0 is already installed.
  Now using node v11.7.0 (npm v6.5.0)
  Installing default global packages from /Users/liebsoer/.nvm/default-packages...  
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/ng -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/@angular/cli/bin/ng
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/vue -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/@vue/cli/bin/vue.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/eslint -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/eslint/bin/eslint.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/lerna -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/lerna/cli.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/ntl -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/ntl/cli.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/parcel -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/parcel-bundler/bin/cli.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/prettier -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/prettier/bin-prettier.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/sass -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/sass/sass.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/tsc -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/typescript/bin/tsc
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/tsserver -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/typescript/bin/tsserver
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/yarn -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/yarn/bin/yarn.js
  /Users/liebsoer/.nvm/versions/node/v11.7.0/bin/yarnpkg -> /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/yarn/bin/yarn.js
  
  > parcel-bundler@1.11.0 postinstall /Users/liebsoer/.nvm/versions/node/v11.7.0/lib/node_modules/parcel-bundler
  > node -e "console.log('\u001b[35m\u001b[1mLove Parcel? You can now donate to our open collective:\u001b[22m\u001b[39m\n > \u001b[34mhttps://opencollective.com/parcel/donate\u001b[0m')"
  
  Love Parcel? You can now donate to our open collective:
  > https://opencollective.com/parcel/donate
  npm WARN apollo-tracing@0.4.0 requires a peer of graphql@0.10.x - 14.0.x but none is installed. You must install peer dependencies yourself.
  
  + ntl@3.0.0
  + sass@1.16.1
  + prettier@1.15.3
  + parcel-bundler@1.11.0
  + yarn@1.13.0
  + lerna@3.10.5
  + eslint@5.12.1
  + @angular/cli@7.2.2
  + typescript@3.2.4
  + @vue/cli@3.3.0
  removed 1 package and updated 15 packages in 61.012s

• What did you expect to happen? Installation of default packages happens only during node installation.

• Is there anything in any of your profile files (.bashrc, .bash_profile, .zshrc, etc) that modifies the PATH? Not that I am aware of.

[ljharb]

Note that nvm is explicitly not supported when installed via homebrew. Can you brew uninstall it, and install it using one of the documented methods?

Also, "auto switch on cd" isn't built into nvm - perhaps you copied one of the snippets from the readme, and perhaps that uses nvm install internally?

[ljharb]

Closing pending followup.