add-erlangls (#144)

Co-authored-by: William Boman <william@redwill.se>

2 files changed, 36 insertions, 0 deletions

diff --git a/lua/nvim-lsp-installer/servers/erlangls/init.lua b/lua/nvim-lsp-installer/servers/erlangls/init.lua
new file mode 100644
index 00000000..4baa075a
--- /dev/null
+++ b/lua/nvim-lsp-installer/servers/erlangls/init.lua
@@ -0,0 +1,35 @@
+local server = require "nvim-lsp-installer.server"
+local path = require "nvim-lsp-installer.path"
+local process = require "nvim-lsp-installer.process"
+local std = require "nvim-lsp-installer.installers.std"
+local context = require "nvim-lsp-installer.installers.context"
+local platform = require "nvim-lsp-installer.platform"
+
+return function(name, root_dir)
+    local erlang_ls_file_ext = platform.is_win and ".cmd" or ""
+    return server.Server:new {
+        name = name,
+        root_dir = root_dir,
+        homepage = "https://erlang-ls.github.io/",
+        installer = {
+            std.ensure_executables {
+                { "rebar3", "rebar3 was not found in path. Refer to http://rebar3.org/docs/." },
+            },
+            context.latest_github_release "erlang-ls/erlang_ls",
+            std.git_clone "https://github.com/erlang-ls/erlang_ls.git",
+            function(server, callback, context)
+                local c = process.chain {
+                    cwd = server.root_dir,
+                    stdio_sink = context.stdio_sink,
+                }
+                local rebar3 = platform.is_win and "rebar3.cmd" or "rebar3"
+                c.run(rebar3, { "escriptize" })
+                c.run(rebar3, { "as", "dap", "escriptize" })
+                c.spawn(callback)
+            end,
+        },
+        default_options = {
+            cmd = { path.concat { root_dir, "_build", "default", "bin", ("erlang_ls%s"):format(erlang_ls_file_ext) } },
+        },
+    }
+end
diff --git a/lua/nvim-lsp-installer/servers/init.lua b/lua/nvim-lsp-installer/servers/init.lua
index 48516442..35c23627 100644
--- a/lua/nvim-lsp-installer/servers/init.lua
+++ b/lua/nvim-lsp-installer/servers/init.lua
@@ -56,6 +56,7 @@ local CORE_SERVERS = Data.set_of {
     "elmls",
     "ember",
     "emmet_ls",
+    "erlangls",
     "eslintls",
     "fortls",
     "gopls",