testing/kalker: disable on loongarch64

found libc 0.2.139, support for loongarch64 added in 0.2.154

testing/kalker/APKBUILD

@@ -5,7 +5,8 @@ pkgver=2.2.0
 pkgrel=0
 pkgdesc="Calculator that supports user-defined variables, functions, differentiation, and integration"
 url="https://kalker.xyz"
-arch="all !s390x" # nix
+# s390x: nix, loongarch64: libc
+arch="all !s390x !loongarch64"
 license="MIT"
 makedepends="
 	cargo