Make examples build

Author: samuelWilliams99

.github/workflows/integrate.yaml

@@ -61,6 +61,7 @@ jobs:
           extra_nix_config: |
             trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
             substituters = https://hydra.iohk.io https://iohk.cachix.org https://cache.nixos.org/
+            extra-experimental-features = nix-command flakes
       - uses: cachix/cachix-action@v10
         with:
           name: mlabs
@@ -75,4 +76,4 @@ jobs:
             dist-newstyle
           key: ${{ runner.os }}-cabal
       - name: Build the full ci derivation
-        run: nix build -L .#check.x86_64-linux --extra-experimental-features nix-command --extra-experimental-features flakes
+        run: make nix_build

Makefile

@@ -3,7 +3,7 @@
 # In most cases you should execute Make after entering nix-shell.
 
 .PHONY: hoogle pab_servers_all pab_servers_all pab_db clean_db \
-	build test accept_pirs watch ghci readme_contents \
+	nix_build build test accept_pirs watch ghci readme_contents \
 	format lint requires_nix_shell 
 
 usage:
@@ -16,6 +16,7 @@ usage:
 	@echo
 	@echo "Available commands:"
 	@echo "  hoogle              -- Start local hoogle"
+	@echo "  nix_build           -- Run nix build -L on all targets"
 	@echo "  build               -- Run cabal v2-build"
 	@echo "  watch               -- Track files: bot-plutus-interface.cabal, src/* and run 'make build' on change"
 	@echo "  test                -- Run cabal v2-test"
@@ -44,6 +45,9 @@ ifdef FLAGS
 GHC_FLAGS = --ghc-options "$(FLAGS)"
 endif
 
+nix_build:
+	nix build -L .#check.x86_64-linux .#plutus-transfer:exe:plutus-transfer-pab .#plutus-game:exe:plutus-game-pab .#plutus-nft:exe:plutus-nft-pab
+
 build: requires_nix_shell
 	cabal v2-build $(GHC_FLAGS)
 

cabal.project

@@ -2,6 +2,9 @@
 index-state: 2021-10-20T00:00:00Z
 
 packages: ./.
+          ./examples/plutus-game/plutus-game.cabal
+          ./examples/plutus-transfer/plutus-transfer.cabal
+          ./examples/plutus-nft/plutus-nft.cabal
 
 -- You never, ever, want this.
 write-ghc-environment-files: never