Bump flake and fix wasm builds; CI improvements (#108)

* chore: nix flake update

* fix(test/build.rs): don't inherit all env vars

with a recent rust update (to 1.75.0) this breaks wasm builds as they
wrongly inherit the flags defined in
CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS. as it's unclear to me
why that is, i opted to clear the entire environment which also disables
inheritance, and add only the desired necessary variables back

* refactor(github/workflows): merge mac with test and use matrix for OS selection

* chore(github/workflows/test): bump nix related actions

* chore: nix flake update

* test: don't fail fast

* debug build env vars

* fixup! debug build env vars

* Update test/build.rs

* Update test/build.rs

.github/workflows/test.yml

@@ -6,28 +6,22 @@ on:
       - develop
   pull_request: {}
 
-env:
-  HOLOCHAIN_REPO: "/var/tmp/holochain_repo"
-  CACHIX_REV: "v1.2"
-
 jobs:
   test:
-    runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         script: ["./test.sh", "./bench.sh"]
+        os: ["ubuntu-latest", "macos-latest"]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
       - name: Install nix
-        uses: cachix/install-nix-action@v20
+        uses: cachix/install-nix-action@v26
       - name: Setup cachix
-        uses: cachix/cachix-action@v12
+        uses: cachix/cachix-action@v14
         if: ${{ ! contains(matrix.platform.runs-on, 'self-hosted') }}
         with:
           name: holochain-ci
           authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
-          installCommand: |
-            nix-env -if https://github.com/cachix/cachix/tarball/${CACHIX_REV} \
-              --substituters 'https://cache.nixos.org https://cachix.cachix.org' \
-              --trusted-public-keys 'cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY='
       - run: nix develop --command ${{ matrix.script }}