feat: error out when home is not set (#1128)

- Errors when `--home` is not set
- Will **not** error when `--help` is set
- Will **not** error when `--home` is set to default home

networks/genesis/devnet.nix

@@ -89,7 +89,7 @@
 
           CODE_HASH=$(sha256sum ${self'.packages.ucs01-relay}/lib/ucs01_relay.wasm | cut -f1 -d" ")
 
-          ${uniond} query wasm build-address $CODE_HASH $ALICE_ADDRESS ${cw-instantiate2-salt} > $out/CW20_ICS20_CONTRACT_ADDRESS
+          ${uniond} query wasm build-address $CODE_HASH $ALICE_ADDRESS ${cw-instantiate2-salt} --home $out > $out/CW20_ICS20_CONTRACT_ADDRESS
         '';
 
       calculatePingPongAddress = home: pkgs.runCommand "calculate-ping-pong-contract-address"
@@ -109,7 +109,7 @@
 
           CODE_HASH=$(sha256sum ${self'.packages.ucs00-pingpong}/lib/ucs00_pingpong.wasm | cut -f1 -d" ")
 
-          ${uniond} query wasm build-address $CODE_HASH $ALICE_ADDRESS ${cw-instantiate2-salt} > $out/PING_PONG_CONTRACT_ADDRESS
+          ${uniond} query wasm build-address $CODE_HASH $ALICE_ADDRESS ${cw-instantiate2-salt} --home $out > $out/PING_PONG_CONTRACT_ADDRESS
         '';
 
       addIbcConnectionToGenesis = home: pkgs.runCommand "add-ibc-connection-to-genesis"

uniond/cmd/uniond/cmd/root.go

@@ -91,11 +91,16 @@ func NewRootCmd() (*cobra.Command, appparams.EncodingConfig) {
 		Use:   app.Name + "d",
 		Short: "Start union node",
 		PersistentPreRunE: func(cmd *cobra.Command, _ []string) error {
+			// panic if there is no home flag
+			if !cmd.Flags().Changed(flags.FlagHome) {
+				return errors.New("before running a uniond subcommand, set the `--home` flag")
+			}
 			// set the default command outputs
 			cmd.SetOut(cmd.OutOrStdout())
 			cmd.SetErr(cmd.ErrOrStderr())
 
 			initClientCtx = initClientCtx.WithCmdContext(cmd.Context())
+
 			initClientCtx, err := client.ReadPersistentCommandFlags(initClientCtx, cmd.Flags())
 			if err != nil {
 				return err