--- build.lua.orig
+++ build.lua
@@ -24,7 +24,7 @@
     if package == "builtin" then
         return true
     end
-    return os.execute("pkg-config "..package) == 0
+    return os.execute("pkg-config "..package)
 end
 
 local function detect_package(name, package)
@@ -54,7 +54,7 @@
 end
 
 local function has_binary(binary)
-    return os.execute("type "..binary.." >/dev/null 2>&1") == 0
+    return os.execute("type "..binary.." >/dev/null 2>&1")
 end
 
 local function package_flags(package, kind)
@@ -68,8 +68,8 @@
     end
 
     local filename = os.tmpname()
-    local e = os.execute("pkg-config "..kind.." "..package.." > "..filename)
-    if e ~= 0 then
+    
+    if os.execute("pkg-config "..kind.." "..package.." > "..filename) == false then
         error("required package "..package.." is not available")
     end
     local s = io.open(filename):read("*a")