Não é possível compilar um arquivo simples usando o nó sem

Question

Estou tentando compilar um arquivo muito simples menor que inclua apenas o Bootstrap:

/* application.less: The most awesomely complicated file in the whole world. */
@import "bootstrap/bootstrap.less";

Estou em um derivativo do Ubuntu 12.04 e tentei usar o compilador lessc encontrado no pacote node-less :

$ sudo apt-get install node-less
...done!
$ ( cd /path/of/less/file/ && lessc application.less )
TypeError: Cannot call method 'charAt' of undefined
    at getLocation (/usr/lib/nodejs/less/parser.js:204:34)
    at new LessError (/usr/lib/nodejs/less/parser.js:213:19)
    at Object.toCSS (/usr/lib/nodejs/less/parser.js:379:31)
    at /usr/bin/lessc:103:28
    at /usr/lib/nodejs/less/parser.js:428:40
    at /usr/lib/nodejs/less/parser.js:94:48
    at /usr/lib/nodejs/less/index.js:113:15
    at /usr/lib/nodejs/less/parser.js:428:40
    at /usr/lib/nodejs/less/parser.js:94:48
    at /usr/lib/nodejs/less/index.js:113:15

Não é fácil dissuadir, então tentei usar a versão em Ruby do lessc.

$ sudo apt-get remove --purge node-less
$ sudo gem install less
...done!
[WARNING] Please install gem 'therubyracer' to use Less.
/usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in 'gem_original_require': no such file to load -- v8 (LoadError)
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in 'require'
    from /var/lib/gems/1.8/gems/less-2.2.2/lib/less/java_script/v8_context.rb:2
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in 'gem_original_require'
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in 'require'
    from /var/lib/gems/1.8/gems/less-2.2.2/lib/less/java_script.rb:9:in 'default_context_wrapper'
    from /var/lib/gems/1.8/gems/less-2.2.2/lib/less/java_script.rb:17:in 'context_wrapper'
    from /var/lib/gems/1.8/gems/less-2.2.2/lib/less/loader.rb:10:in 'initialize'
    from /var/lib/gems/1.8/gems/less-2.2.2/lib/less.rb:14:in 'new'
    from /var/lib/gems/1.8/gems/less-2.2.2/lib/less.rb:14
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in 'gem_original_require'
    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in 'require'
    from /var/lib/gems/1.8/gems/less-2.2.2/bin/lessc:3
    from /usr/local/bin/lessc:19:in 'load'
    from /usr/local/bin/lessc:19

Vamos lá! Ruby não sabe como gerenciar dependências ?! Tanto faz. Bem.

$ sudo gem install therubyracer
/usr/bin/ruby1.8 extconf.rb
checking for main() in -lpthread... yes
checking for v8.h... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/usr/bin/ruby1.8
    --with-pthreadlib
    --without-pthreadlib
    --enable-debug
    --disable-debug
    --with-v8-dir
    --without-v8-dir
    --with-v8-include
    --without-v8-include=${v8-dir}/include
    --with-v8-lib
    --without-v8-lib=${v8-dir}/lib
/var/lib/gems/1.8/gems/therubyracer-0.11.0/ext/v8/build.rb:42:in 'build_with_system_libv8': unable to locate libv8. Please see output for details (RuntimeError)
    from extconf.rb:22
    The Ruby Racer requires libv8 ~> 3.11.8
    to be present on your system in order to compile
    and link, but it could not be found.

    In order to resolve this, you will either need to manually
    install an appropriate libv8 and make sure that this
    build process can find it. If you install it into the
    standard system path, then it should just be picked up
    automatically. Otherwise, you'll have to pass some extra
    flags to the build process as a hint.

    If you don't want to bother with all that, there is a
    rubygem that will do all this for you. You can add
    following line to your Gemfile:
        gem 'libv8', '~> 3.11.8'

    We hope that helps, and we apologize, but now we have
    to push the eject button on this install.

    thanks,
    The Mgmt.

E eu terminei. Existe alguma maneira fácil para obter um funcionamento menos compilador instalado na minha distribuição? Isso está ficando ridículo.

    

Answer 1

Com muita ajuda do @Deer Hunter, eu comecei a trabalhar rapidamente.

$ sudo apt-get install npm
$ sudo npm install --global less
$ sudo ln -s /usr/local/lib/node_modules/less/bin/lessc /usr/local/bin

    

Answer 2

Este lado da tela:

 $ node --version
 v.0.8.16
 $ npm --version
 1.1.69
 $ npm install less
 npm http GET https://registry.npmjs.org/less
 npm http 200 https://registry.npmjs.org/less
 npm http GET https://registry.npmjs.org/less/-/less-1.3.3.tgz
 npm http 200 https://registry.npmjs.org/less/-/less-1.3.3.tgz
 npm http GET https://registry.npmjs.org/ycssmin
 npm http 200 https://registry.npmjs.org/ycssmin
 npm http GET https://registry.npmjs.org/ycssmin/-/ycssmin-1.0.1.tgz
 npm http 200 https://registry.npmjs.org/ycssmin/-/ycssmin-1.0.1.tgz
 [email protected] node_modules/less
 └── [email protected]
 $ ln --symbolic ~/node_modules/.bin/lessc ~/bin/lessc
 $ lessc --version
 lessc 1.3.3 (LESS Compiler) [JavaScript]

A instalação funciona. Não foi possível executar o arquivo test.less , embora (não bootstrap installed). Resumindo: por que você não usa npm ? Qual versão de node você instalou?