How to install a specific revision of a package.

[madelaney]

All,

I have mason and mason-lspconfig, setup and installing some packages. However, in one of the packages there's a newly introduced bug. I'm trying to work around this bug by downgrading to a previous tag (i.e the latest is 1.3.0 but I want to install 1.2.0).

I tried to look over the docs for how to install a specific revision but either I was using the wrong term, or I'm blind as I had no luck finding it.

• Mike D.

[williamboman]

Hello! You can specify a version when installing a package, like so:

• via the command interface: :MasonInstall package@v1.0.0
• via the Lua API: pkg:install { version = "v1.0.0" }

mason-lspconfig also supports specifying versions in the ensure_installed table:

require("mason-lspconfig").setup {
  ensure_installed = { "package@v1.0.0" }
}

[madelaney]

Awesome. Thank you sir!

[Drew-Daniels]

In case this trips up anyone else, I had to remove the v from the version to get my package to install correctly this way:
:MasonInstall package@1.0.0

[srgsanky]

+1 had to remove the v in version.

The equivalent when using ensure_installed is

require('mason-lspconfig').setup {
  ensure_installed = { 'lua_ls@3.7.4' },
}

Here is sample lua to do the same using APIs

local mason_registry = require 'mason-registry'
local package = mason_registry.get_package 'lua-language-server'
local lua_ls_version = '3.7.4'
if not package:is_installed() then
  package:install { version = lua_ls_version }
end