YouCompleteMe não está funcionando após a instalação padrão

Question

Eu estava tentando instalar YouCompleteMe com Vundle e ele foi instalado corretamente (ele baixou o repositório git para o qual eu indiquei). Fui para a pasta e executei install.sh com a semântica de clang e tudo parece funcionar bem, exceto pelo fato de eu receber esse erro toda vez que inicio Vim e ele tenta iniciar o YCM plugin:

Error detected while processing VimEnter Auto commands for "*": E117: Unknown function: youcompleteme#Enable

Além disso (se for útil), a seção Helptags em PluginInstall sempre gerou um erro, mas nunca afetou a execução dos plug-ins antes.

O resultado de run_tests.sh :

/tmp/ycm_build.tYz9by ~/.vim/bundle/YouCompleteMe
-- The C compiler identification is GNU 4.8.2
-- The CXX compiler identification is GNU 4.8.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
Your C++ compiler supports C++11, compiling in that mode.
-- Found PythonLibs: /usr/lib/i386-linux-gnu/libpython2.7.so (found suitable version "2.7.6", minimum required is "2.6") 
NOT using libclang, no semantic completion for C/C++/ObjC will be available
-- Found PythonInterp: /usr/bin/python (found version "2.7.6") 
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/ycm_build.tYz9by
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Linking CXX shared library /home/josh/.vim/bundle/YouCompleteMe/third_party/ycmd/ycm_core.so
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~/.vim/bundle/YouCompleteMe
./run_tests.sh: line 9: flake8: command not found

    

Answer 1

módulo py floco8 é necessário

sudo pip install flake8