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From: Meiyo Peng <meiyo.peng@gmail.com>
To: 30265@debbugs.gnu.org
Subject: bug#30265: Fish shell has wrong path variables
Date: Sat, 27 Jan 2018 17:11:46 +0800	[thread overview]
Message-ID: <87inbnpsx9.fsf@gmail.com> (raw)

Hi,

I am using GuixSD 0.14. After upgrading fish shell to latest version(v2.7.1) and
running `guix gc`, fish shell does not work well.
#+BEGIN_EXAMPLE
  meiyo@guix ~$ fish
  fish:
  echo $_ " "; __fish_pwd
               ^
  in command substitution
          called on standard input

  fish:
  __fish_pwd
  ^
  in command substitution
          called on standard input

  in command substitution
          called on standard input

  fish:
  echo $_ " "; __fish_pwd
               ^
  in command substitution
          called on standard input
#+END_EXAMPLE

__fish_pwd is a fish function. It's defined in
`share/fish/functions/__fish_pwd.fish`.  The error message shows that fish
cannot load __fish_pwd's function definition from disk. After doing some
research, I found out that the error was caused by wrong environment variables.

Fish shell is installed in:
#+BEGIN_EXAMPLE
  /gnu/store/ajbbi9cgj9j0my7v5habp0lcysaf2a51-fish-2.7.1/
#+END_EXAMPLE

But the environment variable $fish_function_path does not exist. And these
environment variables point to non-existent paths:
#+BEGIN_EXAMPLE
  __fish_bin_dir /gnu/store/4jkxcz8kpy621ycmqn3rvs0fv6c98h6p-fish-2.7.1/bin
  __fish_datadir /gnu/store/4jkxcz8kpy621ycmqn3rvs0fv6c98h6p-fish-2.7.1/share/fish
#+END_EXAMPLE

Setting $fish_function_path to the correct path reduces the error message.
#+BEGIN_EXAMPLE
  set fish_function_path /gnu/store/ajbbi9cgj9j0my7v5habp0lcysaf2a51-fish-2.7.1/share/fish/functions
#+END_EXAMPLE

`share/fish/config.fish` states $__fish_datadir is set by fish.cpp,
and $fish_function_path is derived from $__fish_datadir.
#+BEGIN_SRC fish
  # __fish_datadir, __fish_sysconfdir, __fish_help_dir, __fish_bin_dir
  # are expected to have been set up by read_init from fish.cpp


  # Set up function and completion paths. Make sure that the fish
  # default functions/completions are included in the respective path.

  if not set -q fish_function_path
      set fish_function_path $configdir/fish/functions $__fish_sysconfdir/functions $__extra_functionsdir $__fish_datadir/functions
  end

  if not contains -- $__fish_datadir/functions $fish_function_path
      set fish_function_path $fish_function_path $__fish_datadir/functions
  end
#+END_SRC

In conclusion, I think some path related variables are not set correctly when
fish is compiled from source code and that caused the bug I met. But since I'm
not good at C++ programming, I will not dive deeper.

I hope that the information provided above is helpful.


Meiyo Peng

             reply	other threads:[~2018-01-27  9:13 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-27  9:11 Meiyo Peng [this message]
2018-01-27 10:36 ` bug#30265: Fish shell has wrong path variables ng0
2018-01-27 16:25   ` Ludovic Courtès
2018-01-27 18:19     ` ng0
2018-01-27 12:19 ` Ricardo Wurmus
2018-01-27 13:45   ` Meiyo Peng
2018-01-27 14:13 ` Meiyo Peng
2018-09-19  9:09 ` Pierre Neidhardt
2018-09-19 20:39   ` Ludovic Courtès
2018-09-20 16:09     ` Pierre Neidhardt
2018-09-20 17:00       ` Ricardo Wurmus
2018-09-20 17:12         ` Pierre Neidhardt
2018-09-21 12:03           ` Ludovic Courtès
2018-09-21 12:05       ` Ludovic Courtès
2018-09-21 14:42         ` Pierre Neidhardt
2018-09-21 14:46           ` Ricardo Wurmus
2018-09-21 15:11             ` Pierre Neidhardt
2019-02-02  7:20 ` bug#30265: Fish embeds store file names in UCS-4/UTF-32 literal strings Meiyo Peng
2019-02-04 22:16   ` Ludovic Courtès
2020-03-30  6:29 ` John Soo
2022-10-07 19:42   ` Maxim Cournoyer
2022-10-07 19:43   ` Maxim Cournoyer
2022-10-07 19:44     ` John Soo
2022-10-07 20:57       ` Mark H Weaver
2022-10-10  3:38         ` Maxim Cournoyer

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