fix: switch from deprecated magic-nix-cache to flakehub (#25)

* fix: switch from deprecated magic-nix-cache to flakehub

* fix: specify bash interpreter for scripts

* fix: specify bash interpreter in install.sh

.github/workflows/test.yml

@@ -14,8 +14,8 @@ jobs:
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@main
       - name: Setup CI binary cache
-        uses: DeterminateSystems/magic-nix-cache-action@main
+        uses: DeterminateSystems/flakehub-cache-action@main
       - name: Perform health checks on flake.nix
         uses: DeterminateSystems/flake-checker-action@main
       - name: Launch Nix development environment and run basic tests
-        run: nix develop -i --accept-flake-config --keep HOME --command bash -c "chmod +x *.sh; ./install.sh; . source.sh; ./hash.sh;"
+        run: nix develop -i --accept-flake-config --keep HOME --command bash -c "chmod +x *.sh; bash ./install.sh; bash ./source.sh; bash ./hash.sh;"

install.sh

@@ -9,5 +9,5 @@
 # Dependencies will intentionally not be updated to ensure reproducibility.
 
 chmod +x *.sh
-./pull.sh
-./build.sh
+bash ./pull.sh
+bash ./build.sh