rewrite some installers for broader cross-platform support (#85)

- Remove all usage of zx in favour of native Lua (via libuv)
- Introduce new set of `std` installers

The following servers will have to be reinstalled due to this change:
1. clangd
2. solargraph
3. sumneko_lua
4. tailwindcss

2 files changed, 14 insertions, 21 deletions

diff --git a/lua/nvim-lsp-installer/servers/clojure_lsp/init.lua b/lua/nvim-lsp-installer/servers/clojure_lsp/init.lua
index 8f22b676..a1331309 100644
--- a/lua/nvim-lsp-installer/servers/clojure_lsp/init.lua
+++ b/lua/nvim-lsp-installer/servers/clojure_lsp/init.lua
@@ -1,15 +1,25 @@
 local server = require "nvim-lsp-installer.server"
-local installers = require "nvim-lsp-installer.installers"
 local path = require "nvim-lsp-installer.path"
-local zx = require "nvim-lsp-installer.installers.zx"
+local std = require "nvim-lsp-installer.installers.std"
+local Data = require "nvim-lsp-installer.data"
+local platform = require "nvim-lsp-installer.platform"
 
 local root_dir = server.get_server_root_path "clojure_lsp"
 
+local VERSION = "2021.07.01-19.49.02"
+
+local target = Data.coalesce(
+    Data.when(platform.is_mac, "clojure-lsp-native-macos-amd64.zip"),
+    Data.when(platform.is_unix, "clojure-lsp-native-linux-amd64.zip"),
+    Data.when(platform.is_win, "clojure-lsp-native-windows-amd64.zip")
+)
+
 return server.Server:new {
     name = "clojure_lsp",
     root_dir = root_dir,
-    installer = installers.when {
-        unix = zx.file "./install.mjs",
+    installer = {
+        std.unzip_remote(("https://github.com/clojure-lsp/clojure-lsp/releases/download/%s/%s"):format(VERSION, target)),
+        std.chmod("+x", { "clojure-lsp" }),
     },
     default_options = {
         cmd = { path.concat { root_dir, "clojure-lsp" } },
diff --git a/lua/nvim-lsp-installer/servers/clojure_lsp/install.mjs b/lua/nvim-lsp-installer/servers/clojure_lsp/install.mjs
deleted file mode 100644
index 049e983c..00000000
--- a/lua/nvim-lsp-installer/servers/clojure_lsp/install.mjs
+++ /dev/null
@@ -1,17 +0,0 @@
-const VERSION = "2021.07.01-19.49.02";
-
-const target = (() => {
-    switch (os.platform()) {
-        case "darwin":
-            return "clojure-lsp-native-macos-amd64.zip";
-        default:
-            return "clojure-lsp-native-linux-amd64.zip";
-    }
-})();
-
-const downloadUrl = `https://github.com/clojure-lsp/clojure-lsp/releases/download/${VERSION}/${target}`;
-
-await $`wget ${downloadUrl}`;
-await $`unzip -o ${target}`;
-await $`chmod +x clojure-lsp`;
-await $`rm ${target}`;