Fails when $TERM=xterm

[alphabt]

I have a rails app that uses rb-readline. When I rails console in Alpine Linux it fails with error below.

/usr/src/app $ rails c
Loading production environment (Rails 5.2.2.1)
/usr/src/app/bin/rails: No such file or directory - infocmp
Traceback (most recent call last):
	43: from /usr/src/app/bin/rails:9:in `<main>'
	42: from /usr/local/bundle/gems/activesupport-5.2.2.1/lib/active_support/dependencies.rb:291:in `require'
	41: from /usr/local/bundle/gems/activesupport-5.2.2.1/lib/active_support/dependencies.rb:257:in `load_dependency'
	40: from /usr/local/bundle/gems/activesupport-5.2.2.1/lib/active_support/dependencies.rb:291:in `block in require'
	39: from /usr/local/bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
	38: from /usr/local/bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
	37: from /usr/local/bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
	36: from /usr/local/bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
	35: from /usr/local/bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
	34: from /usr/local/bundle/gems/railties-5.2.2.1/lib/rails/commands.rb:18:in `<main>'
	33: from /usr/local/bundle/gems/railties-5.2.2.1/lib/rails/command.rb:46:in `invoke'
	32: from /usr/local/bundle/gems/railties-5.2.2.1/lib/rails/command/base.rb:65:in `perform'
	31: from /usr/local/bundle/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
	30: from /usr/local/bundle/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
	29: from /usr/local/bundle/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
	28: from /usr/local/bundle/gems/railties-5.2.2.1/lib/rails/commands/console/console_command.rb:96:in `perform'
	27: from /usr/local/bundle/gems/railties-5.2.2.1/lib/rails/commands/console/console_command.rb:19:in `start'
	26: from /usr/local/bundle/gems/railties-5.2.2.1/lib/rails/commands/console/console_command.rb:64:in `start'
	25: from /usr/local/lib/ruby/2.6.0/irb.rb:383:in `start'
	24: from /usr/local/lib/ruby/2.6.0/irb.rb:427:in `run'
	23: from /usr/local/lib/ruby/2.6.0/irb.rb:427:in `catch'
	22: from /usr/local/lib/ruby/2.6.0/irb.rb:428:in `block in run'
	21: from /usr/local/lib/ruby/2.6.0/irb.rb:489:in `eval_input'
	20: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:231:in `each_top_level_statement'
	19: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:231:in `catch'
	18: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:232:in `block in each_top_level_statement'
	17: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:232:in `loop'
	16: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:236:in `block (2 levels) in each_top_level_statement'
	15: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:266:in `lex'
	14: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:292:in `token'
	13: from /usr/local/lib/ruby/2.6.0/irb/slex.rb:76:in `match'
	12: from /usr/local/lib/ruby/2.6.0/irb/slex.rb:206:in `match_io'
	11: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:104:in `getc'
	10: from /usr/local/lib/ruby/2.6.0/irb/ruby-lex.rb:189:in `buf_input'
	 9: from /usr/local/lib/ruby/2.6.0/irb.rb:472:in `block in eval_input'
	 8: from /usr/local/lib/ruby/2.6.0/irb.rb:647:in `signal_status'
	 7: from /usr/local/lib/ruby/2.6.0/irb.rb:473:in `block (2 levels) in eval_input'
	 6: from /usr/local/lib/ruby/2.6.0/irb/input-method.rb:151:in `gets'
	 5: from /usr/local/bundle/gems/rb-readline-0.5.5/lib/readline.rb:45:in `readline'
	 4: from /usr/local/bundle/gems/rb-readline-0.5.5/lib/rbreadline.rb:4868:in `readline'
	 3: from /usr/local/bundle/gems/rb-readline-0.5.5/lib/rbreadline.rb:3849:in `rl_initialize'
	 2: from /usr/local/bundle/gems/rb-readline-0.5.5/lib/rbreadline.rb:2564:in `readline_initialize_everything'
	 1: from /usr/local/bundle/gems/rb-readline-0.5.5/lib/rbreadline.rb:2027:in `_rl_init_terminal_io'
/usr/local/bundle/gems/rb-readline-0.5.5/lib/rbreadline.rb:1815:in `get_term_capabilities': undefined method `split' for nil:NilClass (NoMethodError)

It works if I do TERM=dumb rails console.

Environment

$ cat /etc/os-release
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.9.2
PRETTY_NAME="Alpine Linux v3.9"
HOME_URL="https://alpinelinux.org/"
BUG_REPORT_URL="https://bugs.alpinelinux.org/"

$ echo $TERM
xterm

[RORingBBK]

@alphabt Did you get workaround for this?

[alphabt]

@RORingBBK unfortunately not, the only workaround is run TERM=dumb rails console. I've since removed this gem so I am no longer bumping into this issue.

[Spakman]

Looks like you don't have infocmp available on your system. We currently use that to detect terminal capabilities. Ideally I'd love us to get rid of all the places that we need to shell out, but I think realistically it might be better just to document them all as requirements for now.

[EnziinSystem]

I solved it with add the ncurses package.

apk add ncurses

It's worked

bash-5.0# rails console
Running via Spring preloader in process 49
Loading development environment (Rails 5.2.4.1)
irb(main):001:0>