fix(process): deal with process errors

lua/lazy/manage/process.lua

@@ -42,8 +42,8 @@ function Process.new(cmd, opts)
   opts = opts or {}
   opts.args = opts.args or {}
   if type(cmd) == "table" then
-    self.cmd = table.remove(cmd, 1)
-    vim.list_extend(opts.args, cmd)
+    self.cmd = cmd[1]
+    vim.list_extend(opts.args, vim.list_slice(cmd, 2))
   else
     self.cmd = cmd
   end
@@ -233,10 +233,7 @@ function M.exec(cmd, opts)
   opts = opts or {}
   local proc = M.spawn(cmd, opts)
   proc:wait()
-  if proc.code ~= 0 then
-    error("Process failed with code " .. proc.code)
-  end
-  return vim.split(proc.data, "\n")
+  return vim.split(proc.data, "\n"), proc.code
 end
 
 return M

lua/lazy/util.lua

@@ -162,12 +162,21 @@ end
 ---@param opts? LazyCmdOptions|{filetype?:string}
 function M.float_cmd(cmd, opts)
   opts = opts or {}
+  local Process = require("lazy.manage.process")
+  local lines, code = Process.exec(cmd, { cwd = opts.cwd })
+  if code ~= 0 then
+    M.error({
+      "`" .. table.concat(cmd, " ") .. "`",
+      "",
+      "## Error",
+      table.concat(lines, "\n"),
+    }, { title = "Command Failed (" .. code .. ")" })
+    return
+  end
   local float = M.float(opts)
   if opts.filetype then
     vim.bo[float.buf].filetype = opts.filetype
   end
-  local Process = require("lazy.manage.process")
-  local lines = Process.exec(cmd, { cwd = opts.cwd })
   vim.api.nvim_buf_set_lines(float.buf, 0, -1, false, lines)
   vim.bo[float.buf].modifiable = false
   return float