134 lines
5.7 KiB
Markdown
134 lines
5.7 KiB
Markdown
# Common Issues
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This is a list of commonly encountered problems, known issues, and their solutions.
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### `brew` complains about absence of "Command Line Tools"
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You need to have the Xcode Command Line Utilities installed (and updated): run `xcode-select --install` in the terminal.
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(In OS X prior to 10.9, the "Command Line Tools" package can alternatively be installed from within Xcode. `⌘,` will get you to preferences. Visit the "Downloads" tab and hit the install button next to "Command Line Tools".)
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### Ruby `bad interpreter: /usr/bin/ruby^M: no such file or directory`
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You cloned with git, and your git configuration is set to use Windows line endings. See this page: https://help.github.com/articles/dealing-with-line-endings
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### Ruby `bad interpreter: /usr/bin/ruby`
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You don't have a `/usr/bin/ruby` or it is not executable. It's not recommended to let this persist, you'd be surprised how many .apps, tools and scripts expect your OS X provided files and directories to be *unmodified* since OS X was installed.
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### `brew update` complains about untracked working tree files
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After running `brew update`, you receive a git error warning about untracked files or local changes that would be overwritten by a checkout or merge, followed by a list of files inside your Homebrew installation.
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This is caused by an old bug in in the `update` code that has long since been fixed. However, the nature of the bug requires that you do the following:
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```bash
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cd $(brew --repository)
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git reset --hard FETCH_HEAD
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```
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If `brew doctor` still complains about uncommitted modifications, also run this command:
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```bash
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cd $(brew --repository)/Library
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git clean -fd
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```
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### invalid multibyte escape: /^\037\213/
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You see an error similar to:
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```
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Error: /usr/local/Library/Homebrew/download_strategy.rb:84: invalid multibyte escape: /^\037\213/
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invalid multibyte escape: /^\037\235/
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```
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In the past, Homebrew assumed that `/usr/bin/ruby` was Ruby 1.8. On OS X 10.9, it is now Ruby 2.0. There are various incompatibilities between the two versions, so if you upgrade to OS X 10.9 while using a sufficiently old version of Homebrew, you will encounter errors.
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The incompatibilities have been addressed in more recent versions of Homebrew, and it does not make assumptions about `/usr/bin/ruby`, instead it uses the executable inside OS X's Ruby framework or a vendored Ruby.
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To recover from this situation, do the following:
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```
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cd /usr/local # your Homebrew prefix
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git fetch origin
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git reset --hard FETCH_HEAD
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brew update
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```
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### `launchctl` refuses to load launchd plist files
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When trying to load a plist file into launchctl, you receive an error that resembles
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```
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Bug: launchctl.c:2325 (23930):13: (dbfd = open(g_job_overrides_db_path, [...]
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launch_msg(): Socket is not connected
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```
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or
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```bash
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Could not open job overrides database at: /private/var/db/launchd.db/com.apple.launchd/overrides.plist: 13: Permission denied
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launch_msg(): Socket is not connected
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```
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These are likely due to one of four issues:
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1. You are using iTerm. The solution is to use Terminal.app when interacting with `launchctl`.
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2. You are using a terminal multiplexer such as `tmux` or `screen`. You should interact with `launchctl` from a separate Terminal.app shell.
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3. You are attempting to run `launchctl` while logged in remotely. You should enable screen sharing on the remote machine and issue the command using Terminal.app running on that machine.
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4. You are su'ed as a different user.
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### `brew upgrade` errors out
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When running `brew upgrade`, you see something like this:
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```text
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$ brew upgrade
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Error: undefined method `include?' for nil:NilClass
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Please report this bug:
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https://github.com/Homebrew/brew/blob/master/share/doc/homebrew/Troubleshooting.md
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/usr/local/Library/Homebrew/formula.rb:393:in `canonical_name'
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/usr/local/Library/Homebrew/formula.rb:425:in `factory'
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/usr/local/Library/Contributions/examples/brew-upgrade.rb:7
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/usr/local/Library/Contributions/examples/brew-upgrade.rb:7:in `map'
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/usr/local/Library/Contributions/examples/brew-upgrade.rb:7
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/usr/local/bin/brew:46:in `require'
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/usr/local/bin/brew:46:in `require?'
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/usr/local/bin/brew:79
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```
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This happens because an old version of the upgrade command is hanging around for some reason. The fix:
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```
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$ cd $(brew --repository)/Library/Contributions/examples
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$ git clean -n # if this doesn't list anything that you want to keep, then
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$ git clean -f # this will remove untracked files
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```
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### Python: easy-install.pth cannot be linked
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```
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Warning: Could not link <formulaname>. Unlinking...
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Error: The `brew link` step did not complete successfully
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The formula built, but is not symlinked into /usr/local
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You can try again using `brew link <formulaname>'
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Possible conflicting files are:
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/usr/local/lib/python2.7/site-packages/site.py
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/usr/local/lib/python2.7/site-packages/easy-install.pth
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==> Could not symlink file: /homebrew/Cellar/<formulaname>/<version>/lib/python2.7/site-packages/site.py
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Target /usr/local/lib/python2.7/site-packages/site.py already exists. You may need to delete it.
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To force the link and overwrite all other conflicting files, do:
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brew link --overwrite formula_name
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To list all files that would be deleted:
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brew link --overwrite --dry-run formula_name
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```
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Don't follow the advice here but fix by using
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`Language::Python.setup_install_args` in the formula as described in
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[Python for Formula Authors](Python-for-Formula-Authors.md).
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### Upgrading OS X
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Upgrading OS X can cause errors like the following:
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- `dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.54.dylib`
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- `configure: error: Cannot find libz`
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Following an OS X upgrade it may be necessary to reinstall the Xcode Command Line Tools and `brew upgrade` all installed formula:
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```bash
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xcode-select --install
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brew upgrade
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```
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