Add VimspectorInstall command with sort-of completion

autoload/vimspector.vim

@@ -150,6 +150,52 @@ function! vimspector#CompleteExpr( ArgLead, CmdLine, CursorPos ) abort
              \ "\n" )
 endfunction
 
+function! vimspector#Install( ... ) abort
+  if a:0 < 1
+    return
+  endif
+
+  let gadgets = a:000
+  let force = a:1 ==# '--force'
+  if force
+    let gadgets = a:000[ 1: ]
+  endif
+
+  py3 << EOF
+from vimspector import installer as vimspector_installer
+from vimspector import utils as vimspector_utils
+vimspector_installer.Configure(
+  vimspector_base = vimspector_utils.GetVimspectorBase() )
+vimspector_installer.Install( vim.eval( 'gadgets'), vim.eval( 'force' ) )
+EOF
+endfunction
+
+function! vimspector#CompleteInstall( ArgLead, CmdLine, CursorPos ) abort
+  let words = split( a:CmdLine )
+  let done_options = v:false
+  for word in words
+    if ! word =~# '^--'
+      let done_options = v:true
+      break
+    endif
+  endfor
+
+  let options = []
+
+  if !done_options
+    call extend( options, [ '--force' ] )
+  endif
+
+  py3 from vimspector import installer as vimspector_installer
+  call extend( options, [ 'all' ] )
+  call extend(
+    \ options,
+    \ py3eval(
+    \   '[ g[ "language" ] for g in vimspector_installer.GADGETS.values() ]' ) )
+
+  return join( options, "\n" )
+endfunction
+
 " Boilerplate {{{
 let &cpoptions=s:save_cpo
 unlet s:save_cpo

plugin/vimspector.vim

@@ -97,6 +97,11 @@ command! -bar
       \ VimspectorReset
       \ call vimspector#Reset()
 
+" Installer commands
+command! -bar -nargs=* -complete=custom,vimspector#CompleteInstall
+      \ VimspectorInstall
+      \ call vimspector#Install( <f-args> )
+
 " Dummy autocommands so that we can call this whenever
 augroup VimspectorUserAutoCmds
   au!

python3/vimspector/installer.py

@@ -15,6 +15,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# TODO: Chnage `print` to some other mechanism that can be displayed in a vim
+# buffer?
+
 from urllib import request
 import contextlib
 import functools
@@ -33,7 +36,8 @@ import traceback
 import zipfile
 import json
 
-from vimspector import install
+from vimspector import install, gadgets
+
 
 class Options:
   vimspector_base = None
@@ -48,6 +52,33 @@ def Configure( **kwargs ):
     setattr( options, k, v )
 
 
+def Install( languages, force ):
+  all_enabled = 'all' in languages
+  force_all = all_enabled and force
+
+  install.MakeInstallDirs( options.vimspector_base )
+  all_adapters = ReadAdapters()
+  failed = []
+
+  for name, gadget in gadgets.GADGETS.items():
+    if not gadget.get( 'enabled', True ):
+      if ( not force_all
+           and not ( force and gadget[ 'language' ] in languages ) ):
+        continue
+    else:
+      if not all_enabled and not gadget[ 'language' ] in languages:
+        continue
+
+    InstallGagdet( name,
+                   gadget,
+                   failed,
+                   all_adapters )
+
+  WriteAdapters( all_adapters )
+
+  return failed
+
+
 def InstallGeneric( name, root, gadget ):
   extension = os.path.join( root, 'extension' )
   for f in gadget.get( 'make_executable', [] ):