Use config.json since setting environment variables is legacy and is …

…not recommended any more. https://github.com/ScoopInstaller/Install?tab=readme-ov-file#advanced-installation (#186)

(Introduces inconsistent indentation, which will be fixed in a subsequent commit.)

scoop.lua

@@ -14,49 +14,55 @@ local function get_home_dir()
     return os.getenv("home") or os.getenv("USERPROFILE")
 end
 
-local function scoop_folder()
-    local folder = os.getenv("SCOOP")
+local function scoop_load_config() -- luacheck: no unused args
+  local file = io.open(get_home_dir() .. "\\.config\\scoop\\config.json")
+  -- If there is no such file, then close handle and return
+  if file == nil then
+      return w()
+  end
 
-    if not folder then
-        folder = get_home_dir() .. "\\scoop"
-    end
+  -- Read the whole file contents
+  local contents = file:read("*a")
+  file:close()
 
-    return folder
-end
+  -- strip UTF-8-BOM
+  local utf8_len = contents:len()
+  local pat_start, _ = string.find(contents, "{")
+  contents = contents:sub(pat_start, utf8_len)
 
-local function scoop_global_folder()
-    local folder = os.getenv("SCOOP_GLOBAL")
+  local data = JSON:decode(contents)
 
-    if not folder then
-        folder = os.getenv("ProgramData") .. "\\scoop"
-    end
+  if data == nil then
+      return w()
+  end
 
-    return folder
+  return data
 end
 
-local function scoop_load_config() -- luacheck: no unused args
-    local file = io.open(get_home_dir() .. "\\.config\\scoop\\config.json")
-    -- If there is no such file, then close handle and return
-    if file == nil then
-        return w()
-    end
-
-    -- Read the whole file contents
-    local contents = file:read("*a")
-    file:close()
-
-    -- strip UTF-8-BOM
-    local utf8_len = contents:len()
-    local pat_start, _ = string.find(contents, "{")
-    contents = contents:sub(pat_start, utf8_len)
-
-    local data = JSON:decode(contents)
-
-    if data == nil then
-        return w()
-    end
+local function scoop_folder()
+  local folder = os.getenv("SCOOP")
+  if not folder then
+      local config = scoop_load_config()
+      if config and config.root_path then
+          folder = config.root_path
+      else
+          folder = get_home_dir() .. "\\scoop"
+      end
+  end
+  return folder
+end
 
-    return data
+local function scoop_global_folder()
+  local folder = os.getenv("SCOOP_GLOBAL")
+  if not folder then
+      local config = scoop_load_config()
+      if config and config.global_path then
+          folder = config.global_path
+      else
+          folder = os.getenv("ProgramData") .. "\\scoop"
+      end
+  end
+  return folder
 end
 
 local function scoop_alias_list(token) -- luacheck: no unused args