enabling additional flycheck-checker for spacemacs html layer

Question

I can't seem to enable the scss-stylelint checker for scss-mode.

flycheck-verify-setup gives me this:

Syntax checkers for buffer _typography.scss in scss-mode:

  scss-lint (disabled)
    - may enable:         Automatically disabled!
    - executable:         Not found
    - configuration file: Found at "/Users/edbury/.scss-lint.yml"

  scss-stylelint
    - may enable:         yes
    - executable:         Found at /Users/edbury/.nvm/versions/node/v8.11.1/bin/stylelint
    - configuration file: Found at "/Users/edbury/some/path/.stylelintrc.json"

  sass/scss-sass-lint
    - may enable:         Automatically disabled!
    - executable:         Not found
    - configuration file: Not found

  scss
    - may enable: Automatically disabled!
    - executable: Not found

Flycheck Mode is enabled. Use SPC u C-c ! x to enable disabled checkers.

--------------------

Flycheck version: 32snapshot (package: 20190213.1525)
Emacs version:    26.1
System:           x86_64-apple-darwin17.5.0
Window system:    ns

So everything is configured correctly and it's ready to enable. Great! However, when I use SPC u C-c ! x to enable checkers, the only one that shows up in the list is scss-lint.

Since your input must match a list item, I can't enable scss-stylelint via this method.

I thought that my list of flycheck-checkers might be incomplete or something, but describing the variable gives me a complete list that includes the stylelint checker:

flycheck-checkers is a variable defined in ‘flycheck.el’.
Its value is
(d-ldc ada-gnat asciidoctor asciidoc c/c++-clang c/c++-gcc c/c++-cppcheck cfengine chef-foodcritic coffee coffee-coffeelint coq css-csslint css-stylelint cwl d-dmd dockerfile-hadolint emacs-lisp emacs-lisp-checkdoc erlang-rebar3 erlang eruby-erubis fortran-gfortran go-gofmt go-golint go-vet go-build go-test go-errcheck go-unconvert go-megacheck groovy haml handlebars haskell-stack-ghc haskell-ghc haskell-hlint html-tidy javascript-eslint javascript-jshint javascript-standard json-jsonlint json-python-json jsonnet less less-stylelint llvm-llc lua-luacheck lua markdown-markdownlint-cli markdown-mdl nix nix-linter opam perl perl-perlcritic php php-phpmd php-phpcs processing proselint protobuf-protoc pug puppet-parser puppet-lint python-flake8 python-pylint python-pycompile python-mypy r-lintr racket rpm-rpmlint rst-sphinx rst ruby-rubocop ruby-reek ruby-rubylint ruby ruby-jruby rust-cargo rust rust-clippy scala scala-scalastyle scheme-chicken scss-lint scss-stylelint sass/scss-sass-lint sass scss sh-bash sh-posix-dash sh-posix-bash sh-zsh sh-shellcheck slim slim-lint sql-sqlint systemd-analyze tcl-nagelfar tex-chktex tex-lacheck texinfo textlint typescript-tslint verilog-verilator vhdl-ghdl xml-xmlstarlet xml-xmllint yaml-jsyaml yaml-ruby)

Hopefully, I am missing something incredibly simple. Any insight?

Update Using flycheck-select-checker will allow me to manually select scss-stylelint. However, no linting occurs. I do get an error node: No such file or directory [env], which seems odd because flycheck-verify-setup returns the all clear.

Double Update This only happens in the GUI application. Running emacs in -nw resolves the issue; however, in GUI, running M-: (executable-find "node") does return the correct path (which matches flycheck-verify-setup).

Triple Update Even using flycheck-set-checker-executable, the binary can be located and set successfully, but the GUI app still returns the "not found" error.

Context I am using nvm, but the path correctly shows in exec-path. Clearly, flycheck is able to locate the executable, so something else is going on.

Answer 1

After lots of experimentation, I found that (for my setup), I had to skip over exec-path and set PATH directly via:

(setenv "PATH" (format "%s:%s" "/Users/me/.nvm/versions/node/v8.11.1/bin" (getenv "PATH")))

The relevant paths to node were being found in exec-path and M-: (executable-find "node") was working fine, but - without updating PATH directly - flycheck couldn't find the library.

Answer 2

In the output of flycheck-verify-setup notice

Flycheck Mode is enabled. Use SPC u C-c ! x to enable disabled checkers.

According to your flycheck-verify-setup scss-stylelint is enabled, so it won't be in the list of disabled checkers.