Dlaczego `middleman serve` działa, ale` build middleman` nie potrafi skompilować tego Sassa?

Question

Kiedy wystarczy uruchomić middleman służyć, all.css kompilowany w porządku, składający się tylko z wezwaniem do +box-shadow(none):

/* line 1, /home/yang/asdf/source/stylesheets/content.css.sass */ 
div { 
    -webkit-box-shadow: none; 
    -moz-box-shadow: none; 
    box-shadow: none; } 

ale kiedy zbudować witrynę, otrzymuję ten błąd Sass/Kompas:

$ middleman build 
Slim::EmbeddedEngine is deprecated, it is called Slim::Embedded in Slim 2.0 
Slim::EmbeddedEngine is deprecated, it is called Slim::Embedded in Slim 2.0 
Slim::EmbeddedEngine is deprecated, it is called Slim::Embedded in Slim 2.0 
/home/yang/asdf/source/stylesheets/content.css.sass:2:in `box-shadow': Undefined mixin 'box-shadow'. (Sass::SyntaxError) 
    (in /home/yang/asdf/source/stylesheets/content.css.sass:2) 
     from /home/yang/asdf/source/stylesheets/content.css.sass:2 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:253:in `visit_mixin' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:37:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:100:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:53:in `block in visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:53:in `map' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:53:in `visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:121:in `with_environment' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:108:in `visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:37:in `block in visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:320:in `visit_rule' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:37:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:100:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:53:in `block in visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:53:in `map' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:53:in `visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:121:in `with_environment' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:108:in `visit_children' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:37:in `block in visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:128:in `visit_root' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/base.rb:37:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:100:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/visitors/perform.rb:7:in `visit' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/tree/root_node.rb:20:in `render' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/engine.rb:315:in `_render' 
     from /var/lib/gems/1.9.1/gems/sass-3.2.7/lib/sass/engine.rb:262:in `render' 
     from /var/lib/gems/1.9.1/gems/sprockets-sass-0.9.1/lib/sprockets/sass/sass_template.rb:40:in `evaluate' 
     from /var/lib/gems/1.9.1/gems/tilt-1.3.7/lib/tilt/template.rb:77:in `render' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/context.rb:197:in `block in evaluate' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/context.rb:194:in `each' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/context.rb:194:in `evaluate' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/processed_asset.rb:12:in `initialize' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:374:in `new' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:374:in `block in build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:395: 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:373:in `build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/index.rb:94:in `block in build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/caching.rb:51:in `cache_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/index.rb:93:in `build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:287:in `find_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/index.rb:61:in `find_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/bundled_asset.rb:16:in `initialize' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:377:in `new' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:377:in `build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/index.rb:94:in `block in build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/caching.rb:51:in `cache_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/index.rb:93:in `build_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/base.rb:287:in `find_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/index.rb:61:in `find_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/environment.rb:75:in `find_asset' 
     from /var/lib/gems/1.9.1/gems/sprockets-2.9.2/lib/sprockets/server.rb:47:in `call' 
     from /var/lib/gems/1.9.1/gems/middleman-sprockets-3.0.11/lib/middleman-sprockets/extension.rb:200:in `call' 
     from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:134:in `call' 
     from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/urlmap.rb:64:in `block in call' 
     from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `each' 
     from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/urlmap.rb:49:in `call' 
     from /var/lib/gems/1.9.1/gems/middleman-more-3.0.13/lib/middleman-more/extensions/minify_javascript.rb:51:in `call' 
     from /var/lib/gems/1.9.1/gems/middleman-more-3.0.13/lib/middleman-more/extensions/minify_css.rb:50:in `call' 
     from /var/lib/gems/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:134:in `call' 
     from /var/lib/gems/1.9.1/gems/rack-test-0.6.2/lib/rack/mock_session.rb:30:in `request' 
     from /var/lib/gems/1.9.1/gems/rack-test-0.6.2/lib/rack/test.rb:230:in `process_request' 
     from /var/lib/gems/1.9.1/gems/rack-test-0.6.2/lib/rack/test.rb:57:in `get' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli/build.rb:259:in `block in execute!' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli/build.rb:256:in `each' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli/build.rb:256:in `execute!' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli/build.rb:198:in `invoke!' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/actions.rb:95:in `action' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli/build.rb:65:in `build' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/task.rb:27:in `run' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/invocation.rb:120:in `invoke_task' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor.rb:275:in `dispatch' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/base.rb:425:in `start' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli.rb:77:in `method_missing' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/task.rb:29:in `run' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/task.rb:126:in `run' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/invocation.rb:120:in `invoke_task' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor.rb:275:in `dispatch' 
     from /var/lib/gems/1.9.1/gems/thor-0.15.4/lib/thor/base.rb:425:in `start' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/lib/middleman-core/cli.rb:22:in `start' 
     from /var/lib/gems/1.9.1/gems/middleman-core-3.0.13/bin/middleman:18:in `<top (required)>' 
     from /usr/local/bin/middleman:19:in `load' 
     from /usr/local/bin/middleman:19:in `<main>' 

Powtórzyłem to w poniższym małym prostym przykładzie, który również umieściłem jako kod tar64 zakodowany w base64 na dole, jeśli chcesz repro lokalnie. Obejmuje również pełny ślad śledzenia.

Oto drzewo plików:

asdf 
├── config.rb 
├── config.ru 
├── error 
├── Gemfile 
├── Gemfile.lock 
├── source 
│   └── stylesheets 
│    ├── all.css.sass 
│    └── content.css.sass 

Oto cała zawartość plików:

config.rb:

require 'animate-sass' 
require 'susy' 
require 'slim' 
set :css_dir, 'stylesheets' 
set :js_dir, 'javascripts' 
set :images_dir, 'images' 
set :fonts_dir, 'fonts' 
configure :build do 
    activate :minify_css 
    activate :minify_javascript 
    activate :relative_assets 
    require "middleman-smusher" 
    activate :smusher 

config.ru:

require 'rubygems' 
require 'middleman/rack' 
run Middleman.server 

Gemfile:

source :rubygems 
gem "slim" 
gem "susy" 
gem "animate-sass" 
gem "middleman", "~>3.0.13" 
gem "middleman-smusher" 

Gemfile.lock: patrz tar.gz

all.css.sass:

@import compass/css3/box-shadow 
@import content 

content.css.sass:

div 
    +box-shadow(none) 

Oto base64-encodede tar.gz, który można dekodować przy pomocy base64 -d:

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x/FhnusGXrCHnP5EaqDkBWYI7V3j7Pxz8+7Cf6PwF5TSOE5IijN0VtIkHrxPaDqfn6RnJI5JfJKd 
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Z góry dziękuję za pomoc!

Answer 1

Okazało się, że jest to spowodowane niektórymi plikami, które nie mają być wypisywane z nazwami, które nie zaczynają się od podkreślenia. Np., content.css.sass powinien być _content.css.sass, aby middleman nie próbował bezpośrednio skompilować tego pliku. (Nie jesteśmy naprawdę zna middleman itd. - był to pakiet przekazany do nas, więc zajęło to trochę czasu, aby śledzić to w dół.)

Answer 2

Więc wpadłem na to i chciał dać bardziej precyzyjną odpowiedź:

Dowolny plik w łańcuchu w dół od niewytwierdzonego nazwanego pliku zostanie uszkodzony z błędem, na przykład Sass::SyntaxErrorUndefined Variable lub Undefined mixin.

To tak proste, jak upewnienie się, że każdy plik w łańcuchu zaczyna się od podkreślenia; czasami bardzo łatwo przejść obok!