-# how to specify?
-#BuildRequires: curl-devel.x86_64
-#BuildRequires: libgit2-devel.x86_64
-#BuildRequires: llvm-devel.x86_64 >= 7.0
-#BuildRequires: openssl-devel.x86_64
-#BuildRequires: zlib-devel.x86_64
+# how to specify? - rpm.org adds arch provides on packages (__isa), uncomment once we switch
+#BuildRequires: curl-devel(x86-64)
+#BuildRequires: libgit2-devel(x86-64)
+#BuildRequires: llvm-devel(x86-64)>= 7.0
+#BuildRequires: openssl-devel(x86-64)
+#BuildRequires: zlib-devel(x86-64)