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Add nix-shell
support for preserving PS1
Fixes https://github.com/NixOS/nix/issues/1268 `nix-shell` will now preserve `PS1` if the `NIX_SHELL_PRESERVE_PROMPT` environment variable is set.
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1 changed files with 3 additions and 3 deletions
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@ -98,8 +98,8 @@ static void _main(int argc, char * * argv)
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// List of environment variables kept for --pure
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// List of environment variables kept for --pure
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std::set<string> keepVars{
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std::set<string> keepVars{
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"HOME", "USER", "LOGNAME", "DISPLAY", "PATH", "TERM",
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"HOME", "USER", "LOGNAME", "DISPLAY", "PATH", "TERM", "IN_NIX_SHELL",
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"IN_NIX_SHELL", "TZ", "PAGER", "NIX_BUILD_SHELL", "SHLVL",
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"NIX_SHELL_PRESERVE_PROMPT", "TZ", "PAGER", "NIX_BUILD_SHELL", "SHLVL",
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"http_proxy", "https_proxy", "ftp_proxy", "all_proxy", "no_proxy"
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"http_proxy", "https_proxy", "ftp_proxy", "all_proxy", "no_proxy"
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};
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};
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@ -446,7 +446,7 @@ static void _main(int argc, char * * argv)
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"PATH=%4%:\"$PATH\"; "
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"PATH=%4%:\"$PATH\"; "
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"SHELL=%5%; "
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"SHELL=%5%; "
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"set +e; "
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"set +e; "
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R"s([ -n "$PS1" ] && PS1='\n\[\033[1;32m\][nix-shell:\w]\$\[\033[0m\] '; )s"
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R"s([ -n "$PS1" -a -z "$NIX_SHELL_PRESERVE_PROMPT" ] && PS1='\n\[\033[1;32m\][nix-shell:\w]\$\[\033[0m\] '; )s"
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"if [ \"$(type -t runHook)\" = function ]; then runHook shellHook; fi; "
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"if [ \"$(type -t runHook)\" = function ]; then runHook shellHook; fi; "
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"unset NIX_ENFORCE_PURITY; "
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"unset NIX_ENFORCE_PURITY; "
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"shopt -u nullglob; "
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"shopt -u nullglob; "
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