CentOS 8 搭建Vim golang环境 && YouCompleteMe Golang安装支持

CentOS 8 搭建Vim golang环境

Vim搭建Golang IDE

1. Vundle安装

Vundle是vim的插件管理工具，用它可以自动管理安装后面用到的插件，从GitHub安装

cd
mkdir .vim/bundle
cd .vim/bundle
git clone https://github.com/Valloric/YouCompleteMe.git

安装完成后修改~/.vimrc启用

" .vimrc
" vundle
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
Plugin 'VundleVim/Vundle.vim'
call vundle#end()

2. 安装vim插件

插件管理软件安装好了，接下来安装需要的插件：

• vim-go: https://github.com/fatih/vim-go
• YouCompleteMe: https://github.com/Valloric/YouCompleteMe
• Tagbar: https://github.com/majutsushi/tagbar
• NERDTree: https://github.com/scrooloose/nerdtree

使用vundle自动安装，修改.vimrc

" vundle
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
Plugin 'VundleVim/Vundle.vim'
Plugin 'fatih/vim-go'
Plugin 'Valloric/YouCompleteMe'
Plugin 'Tagbar'
Plugin 'scrooloose/nerdtree'
call vundle#end()

保存，然后vim打开任意文件，输入:PluginInstall自动开始安装
这个过程异常漫长，特别是YouCompleteMe，可以手动安装

cd ~/.vim/bundle

git clone https://github.com/fatih/vim-go
git clone https://github.com/majutsushi/tagbar
git clone https://github.com/scrooloose/nerdtree
git clone https://github.com/Valloric/YouCompleteMe

cd YouCompleteMe
git submodule update --init --recursive

YouCompleteMe递归安装很多依赖包，需很长时间，并且下载完成后还需要编译安装，见下一节

Tagbar需要ctags/gotags支持

yum install ctags -y
go get -u github.com/jstemmer/gotags

3. 安装完成后配置.vimrc

参考：
https://www.jianshu.com/p/2a0ccc86ee31
https://www.jianshu.com/p/8426cef1f4f5
https://blog.csdn.net/hsiffish/article/details/82313792

下面是部分个人使用的设置

" vim-go  golang
let g:go_autodetect_gopath = 1
let g:go_list_type = "quickfix"
let g:go_version_warning = 1
let g:go_highlight_types = 1
let g:go_highlight_fields = 1
let g:go_highlight_functions = 1
let g:go_highlight_function_calls = 1
let g:go_highlight_operators = 1
let g:go_highlight_extra_types = 1
let g:go_highlight_methods = 1
let g:go_highlight_generate_tags = 1
let g:godef_split=2

" NERDTree

" 打开和关闭NERDTree快捷键
map  :NERDTreeToggle
" 设置宽度
let NERDTreeWinSize=25

" Tagbar
nmap  :TagbarToggle
let g:tagbar_width=25
let g:tagbar_type_go = {
    \ 'ctagstype' : 'go',
    \ 'kinds'     : [
        \ 'p:package',
        \ 'i:imports:1',
        \ 'c:constants',
        \ 'v:variables',
        \ 't:types',
        \ 'n:interfaces',
        \ 'w:fields',
        \ 'e:embedded',
        \ 'm:methods',
        \ 'r:constructor',
        \ 'f:functions'
    \ ],
    \ 'sro' : '.',
    \ 'kind2scope' : {
        \ 't' : 'ctype',
        \ 'n' : 'ntype'
    \ },
    \ 'scope2kind' : {
        \ 'ctype' : 't',
        \ 'ntype' : 'n'
    \ },
    \ 'ctagsbin'  : 'gotags',
    \ 'ctagsargs' : '-sort -silent'
    \ }

YouCompleteMe Golang安装支持

YouCompleteMe安装异常艰难，因此记录一些问题

1. 下载

mkdir -p ~/.vim/bundle
cd ~/.vim/bundle
git clone https://github.com/Valloric/YouCompleteMe

cd YouCompleteMe
git submodule update --init --recursive

2. 编译安装

需要预先安装好python, cmake等工具

cd YouCompleteMe
python install.py --go-completer

安装命令很简单，问题很多

错误信息：

go: golang.org/x/[email protected]: unrecognized import path "golang.org/x/net" (https fetch: Get https://golang.org/x/net?go-get=1: dial tcp 21
6.239.37.1:443: i/o timeout)
go: golang.org/x/[email protected]: unrecognized import path "golang.org/x/xerrors" (https fetch: Get https://golang.org/x/xerrors?go-get=1:
 dial tcp 216.239.37.1:443: i/o timeout)
go: golang.org/x/[email protected]: unrecognized import path "golang.org/x/sync" (https fetch: Get https://golang.org/x/sync?go-get=1: dial tcp
 216.239.37.1:443: i/o timeout)
go: error loading module requirements

这是因为不能访问golang.org导致下载失败，解决办法是手动下载，参考博文go get golang.org/x/tools 失败解决

下载好所有的依赖包，并拷贝到下面目录

.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go/src/golang.org/x/

并且把进行安装的shell窗口GOPATH设置为ycmd的go依赖包目录，后面还有很多go语言依赖包都需要下载到这个目录

cd .vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go
export GOPATH='pwd'

只在当前窗口生效，重开窗口重新设置，安装完成后关闭窗口自动失效，不影响系统设置

下载并设置完后，重新进入YouCompleteMe目录执行安装，错误变成下面

错误信息：

Traceback (most recent call last):
  File "/home/xxx/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py", line 1133, in 
    Main()
  File "/home/xxx/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py", line 1119, in Main
    EnableGoCompleter( args )
  File "/home/xxx/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py", line 828, in EnableGoCompleter
    go_dir, 'src', 'golang.org', 'x', 'tools', 'cmd', 'gopls' ) )
FileNotFoundError: [Errno 2] No such file or directory: '/home/xxx/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go/src/golang.org/x/tools/cmd/gopls'

这个错误是说在.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go/src/golang.org/x/tools/cmd/目录下找不到gopls,前面已经下载了golang.org/x/tools/目录所有文件，进入golang.org/x/tools/cmd目录，确实没有gopls，但是发现gopls在golang.org/x/tools目录，说明调整了目录结构，而编译代码比较老，还没有更新

找到出错的代码，.vim/bundle/YouCompleteMe/third_party/ycmd/build.py文件的828行，去掉cmd参数即可，修改如下

//  826   go_dir = p.join( DIR_OF_THIS_SCRIPT, 'third_party', 'go' )
//  827   os.chdir( p.join(
//  828     go_dir, 'src', 'golang.org', 'x', 'tools', 'cmd', 'gopls' ) )
// 修改后
   go_dir = p.join( DIR_OF_THIS_SCRIPT, 'third_party', 'go' )
   os.chdir( p.join(
     go_dir, 'src', 'golang.org', 'x', 'tools', 'gopls' ) )

错误信息：

internal/hooks/diff.go:8:2: cannot find package "github.com/sergi/go-diff/diffmatchpatch" in any of:
        /usr/lib/golang/src/github.com/sergi/go-diff/diffmatchpatch (from $GOROOT)
        /home/xxx/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/sergi/go-diff/diffmatchpatch (from $GOPATH)
internal/hooks/analysis.go:9:2: cannot find package "honnef.co/go/tools/simple" in any of:
        /usr/lib/golang/src/honnef.co/go/tools/simple (from $GOROOT)
        /home/xxx/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go/src/honnef.co/go/tools/simple (from $GOPATH)

这依然是没有找到相应的依赖包，并且自动下载失败，因为访问github太慢了，解决办法同上，手动下载
可以使用 go get命令，下载到系统 $GOPATH下，并拷贝到.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/go/src目录，也可以直接git clone下载

最终下载完成后，go/src目录如下

golang.org/x/tools
golang.org/x/net
golang.org/x/sync
golang.org/x/xerrors
golang.org/x/mod
github.com/haya14busa/goplay
github.com/karrick/godirwalk
github.com/sqs/goreturns
github.com/fatih/gomodifytags
github.com/godoctor/godoctor
github.com/josharian/impl
github.com/davidrjenni/reftools
github.com/mdempsky/gocode
github.com/ramya-rao-a/go-outline
github.com/skratchdot/open-golang
github.com/stamblerre/gocode
github.com/jstemmer/gotags
github.com/acroca/go-symbols
github.com/go-delve/delve
github.com/pkg/errors
github.com/sergi/go-diff
github.com/rogpeppe/godef
github.com/uudashr/gopkgs
github.com/BurntSushi/toml
honnef.co/go/tools
mvdan.cc/xurls

漫长的下载完成后，再进入YouCompleteMe执行python install.py --go-completer安装
最终编译成功安装完成，打开一个go语言文件测试一下，效果如下

3. 附YouCompleteMe C/C++/Python支持

python install.py --clang-completer

错误信息：

下载libclang-9.0.0-x86_64-unknown-linux-gnu.tar.bz2失败
手动下载并复制到YouCompleteMe/third_party/ycmd/clang_archives目录即可
下载地址：https://dl.bintray.com/ycm-core/libclang/libclang-9.0.0-x86_64-unknown-linux-gnu.tar.bz2

更多详情请参考YouCompleteMe文档