1 files changed, 20 insertions, 7 deletions

diff --git a/src/luarocks/build/cmake.lua b/src/luarocks/build/cmake.tl
index b7a4786e..9a512d1e 100644
--- a/src/luarocks/build/cmake.lua
+++ b/src/luarocks/build/cmake.tl
@@ -1,18 +1,30 @@
 
+local type Build = require("luarocks.core.types.build").Build
+
 --- Build back-end for CMake-based modules.
-local cmake = {}
+local record cmake
+   record CMakeBuild
+      is Build where self.type == "cmake"
+
+      cmake: string
+      variables: {string: string}
+      build_pass: boolean
+      install_pass: boolean
+   end
+end
 
 local fs = require("luarocks.fs")
 local util = require("luarocks.util")
 local cfg = require("luarocks.core.cfg")
 
+local type Rockspec = require("luarocks.core.types.rockspec").Rockspec
+
 --- Driver function for the "cmake" build back-end.
 -- @param rockspec table: the loaded rockspec.
 -- @return boolean or (nil, string): true if no errors occurred,
 -- nil and an error message otherwise.
-function cmake.run(rockspec, no_install)
-   assert(rockspec:type() == "rockspec")
-   local build = rockspec.build
+function cmake.run(rockspec: Rockspec, no_install: boolean): boolean, string, string
+   local build = rockspec.build as cmake.CMakeBuild
    local variables = build.variables or {}
 
    -- Pass Env variables
@@ -28,8 +40,9 @@ function cmake.run(rockspec, no_install)
    end
 
    -- If inline cmake is present create CMakeLists.txt from it.
-   if type(build.cmake) == "string" then
-      local cmake_handler = assert(io.open(fs.current_dir().."/CMakeLists.txt", "w"))
+   local build_cmake = build.cmake
+   if build_cmake is string then
+      local cmake_handler = assert((io.open(fs.current_dir().."/CMakeLists.txt", "w")))
       cmake_handler:write(build.cmake)
       cmake_handler:close()
    end
@@ -52,7 +65,7 @@ function cmake.run(rockspec, no_install)
       return nil, "Failed cmake."
    end
 
-   local do_build, do_install
+   local do_build, do_install: boolean, boolean
    if rockspec:format_is_at_least("3.0") then
       do_build   = (build.build_pass   == nil) and true or build.build_pass
       do_install = (build.install_pass == nil) and true or build.install_pass