a62e88304b
Some setups (e.g. a default `tmux` session) will result in a user
starting multiple nested login shells. This is a problem for the way we
currently handle `shellenv` because a login shell invokes
`/usr/libexec/path_helper` which will prepend the contents of
`/etc/paths` and `/etc/paths.d` to `PATH`. In particular, the second
login shell will place `brew` further down the `PATH` than desired in a
non-`/usr/local` prefix, since `brew shellenv` will no longer produce
output the second time around.
Let's fix this by replacing the check that `brew` is in `PATH` with a
check that `${HOMEBREW_PREFIX}/bin` precedes `/usr/bin` in `PATH`.
Fixes #11851, #11883, Homebrew/discussions#2547.
See also:
- Homebrew/discussions#2237
- https://superuser.com/questions/544989/does-tmux-sort-the-path-variable
58 lines
3.8 KiB
Bash
58 lines
3.8 KiB
Bash
#: * `shellenv`
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#:
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#: Print export statements. When run in a shell, this installation of Homebrew will be added to your `PATH`, `MANPATH`, and `INFOPATH`.
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#:
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#: The variables `HOMEBREW_PREFIX`, `HOMEBREW_CELLAR` and `HOMEBREW_REPOSITORY` are also exported to avoid querying them multiple times.
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#: The variable `HOMEBREW_SHELLENV_PREFIX` will be exported to avoid adding duplicate entries to the environment variables.
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#: Consider adding evaluation of this command's output to your dotfiles (e.g. `~/.profile`, `~/.bash_profile`, or `~/.zprofile`) with: `eval "$(brew shellenv)"`
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# HOMEBREW_CELLAR and HOMEBREW_PREFIX are set by extend/ENV/super.rb
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# HOMEBREW_REPOSITORY is set by bin/brew
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# shellcheck disable=SC2154
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homebrew-shellenv() {
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if [[ "${HOMEBREW_SHELLENV_PREFIX}" == "${HOMEBREW_PREFIX}" ]] &&
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[[ "${HOMEBREW_PATH%%/usr/bin:*}" == *"${HOMEBREW_PREFIX}/bin"* ]]
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then
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return
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fi
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case "$(/bin/ps -p "${PPID}" -c -o comm=)" in
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fish | -fish)
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echo "set -gx HOMEBREW_PREFIX \"${HOMEBREW_PREFIX}\";"
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echo "set -gx HOMEBREW_CELLAR \"${HOMEBREW_CELLAR}\";"
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echo "set -gx HOMEBREW_REPOSITORY \"${HOMEBREW_REPOSITORY}\";"
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echo "set -gx HOMEBREW_SHELLENV_PREFIX \"${HOMEBREW_PREFIX}\";"
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echo "set -q PATH; or set PATH ''; set -gx PATH \"${HOMEBREW_PREFIX}/bin\" \"${HOMEBREW_PREFIX}/sbin\" \$PATH;"
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echo "set -q MANPATH; or set MANPATH ''; set -gx MANPATH \"${HOMEBREW_PREFIX}/share/man\" \$MANPATH;"
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echo "set -q INFOPATH; or set INFOPATH ''; set -gx INFOPATH \"${HOMEBREW_PREFIX}/share/info\" \$INFOPATH;"
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;;
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csh | -csh | tcsh | -tcsh)
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echo "setenv HOMEBREW_PREFIX ${HOMEBREW_PREFIX};"
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echo "setenv HOMEBREW_CELLAR ${HOMEBREW_CELLAR};"
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echo "setenv HOMEBREW_REPOSITORY ${HOMEBREW_REPOSITORY};"
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echo "setenv HOMEBREW_SHELLENV_PREFIX ${HOMEBREW_PREFIX};"
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echo "setenv PATH ${HOMEBREW_PREFIX}/bin:${HOMEBREW_PREFIX}/sbin:\$PATH;"
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echo "setenv MANPATH ${HOMEBREW_PREFIX}/share/man\`[ \${?MANPATH} == 1 ] && echo \":\${MANPATH}\"\`:;"
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echo "setenv INFOPATH ${HOMEBREW_PREFIX}/share/info\`[ \${?INFOPATH} == 1 ] && echo \":\${INFOPATH}\"\`;"
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;;
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pwsh | -pwsh | pwsh-preview | -pwsh-preview)
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echo "[System.Environment]::SetEnvironmentVariable('HOMEBREW_PREFIX','${HOMEBREW_PREFIX}',[System.EnvironmentVariableTarget]::Process)"
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echo "[System.Environment]::SetEnvironmentVariable('HOMEBREW_CELLAR','${HOMEBREW_CELLAR}',[System.EnvironmentVariableTarget]::Process)"
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echo "[System.Environment]::SetEnvironmentVariable('HOMEBREW_REPOSITORY','${HOMEBREW_REPOSITORY}',[System.EnvironmentVariableTarget]::Process)"
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echo "[System.Environment]::SetEnvironmentVariable('HOMEBREW_SHELLENV_PREFIX','${HOMEBREW_PREFIX}',[System.EnvironmentVariableTarget]::Process)"
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echo "[System.Environment]::SetEnvironmentVariable('PATH',\$('${HOMEBREW_PREFIX}/bin:${HOMEBREW_PREFIX}/sbin:'+\$ENV:PATH),[System.EnvironmentVariableTarget]::Process)"
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echo "[System.Environment]::SetEnvironmentVariable('MANPATH',\$('${HOMEBREW_PREFIX}/share/man'+\$(if(\${ENV:MANPATH}){':'+\${ENV:MANPATH}})+':'),[System.EnvironmentVariableTarget]::Process)"
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echo "[System.Environment]::SetEnvironmentVariable('INFOPATH',\$('${HOMEBREW_PREFIX}/share/info'+\$(if(\${ENV:INFOPATH}){':'+\${ENV:INFOPATH}})),[System.EnvironmentVariableTarget]::Process)"
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;;
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*)
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echo "export HOMEBREW_PREFIX=\"${HOMEBREW_PREFIX}\";"
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echo "export HOMEBREW_CELLAR=\"${HOMEBREW_CELLAR}\";"
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echo "export HOMEBREW_REPOSITORY=\"${HOMEBREW_REPOSITORY}\";"
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echo "export HOMEBREW_SHELLENV_PREFIX=\"${HOMEBREW_PREFIX}\";"
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echo "export PATH=\"${HOMEBREW_PREFIX}/bin:${HOMEBREW_PREFIX}/sbin\${PATH+:\$PATH}\";"
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echo "export MANPATH=\"${HOMEBREW_PREFIX}/share/man\${MANPATH+:\$MANPATH}:\";"
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echo "export INFOPATH=\"${HOMEBREW_PREFIX}/share/info:\${INFOPATH:-}\";"
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;;
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esac
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}
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