Hardcoded canister principals

Developers Motoko
2

  1. Relevant discussion: ENV variables for motoko builds
    TLDR; you can use actor classes if your canister doesn’t have init parameters, otherwise a bash script or using MOPS are the only way for now.

  2. No you can’t call mainnet from local environment, I remember it was discussed in the past but there were security concerns and Dfinity preferred to go with dfx pull as an alternative.