wasm: init cross target

Adds pkgsCross.wasm32 and pkgsCross.wasm64. Use it to build Nixpkgs
with a WebAssembly toolchain.

stdenv/cross: use static overlay on isWasm

isWasm doesn’t make sense dynamically linked.

1 files changed, 12 insertions, 0 deletions

diff --git a/pkgs/top-level/static.nix b/pkgs/top-level/static.nix
index fe9c04de04cd..dea30fe7b595 100644
--- a/pkgs/top-level/static.nix
+++ b/pkgs/top-level/static.nix
@@ -148,4 +148,16 @@ in {
     };
   };
 
+  llvmPackages_8 = super.llvmPackages_8 // {
+    libraries = super.llvmPackages_8.libraries // rec {
+      libcxxabi = super.llvmPackages_8.libraries.libcxxabi.override {
+        enableShared = false;
+      };
+      libcxx = super.llvmPackages_8.libraries.libcxx.override {
+        enableShared = false;
+        inherit libcxxabi;
+      };
+    };
+  };
+
 }