[Pkg-emacsen-addons] Bug#897143: haskell-mode: Emacs fails to load haskell-mode library: “Symbol’s value as variable is void: Arrows”

[Ben Finney]

Package: haskell-mode
Version: 16.1-3
Severity: normal

After installing the ‘haskell-mode’ package, I try to ‘load-library
haskell-mode’ in Emacs. It fails with these messages:

=====
Loading /usr/share/emacs/25.2/site-lisp/elpa/auto-complete-1.5.0/dict/haskell-mode...
load-with-code-conversion: Symbol’s value as variable is void: Arrows
=====


-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.15.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_AU.UTF-8), LANGUAGE=en_AU.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_AU.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages haskell-mode depends on:
ii  emacs    47.0
ii  emacs25  25.2+1-6+b1

Versions of packages haskell-mode recommends:
ii  ghc   8.0.2-11
ii  hugs  98.200609.21-5.4+b3

Versions of packages haskell-mode suggests:
ii  stylish-haskell  0.8.1.0-1

-- no debconf information

-- 
 \      “The good thing about science is that it's true whether or not |
  `\              you believe in it.” —Neil deGrasse Tyson, 2011-02-04 |
_o__)                                                                  |
Ben Finney <bignose at debian.org>
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