Some adjustments to versi tooling

[michalkucharczyk]

Adjustments to the versi tooling which is a follow-up of paritytech/polkadot-sdk#1256.

[michalkucharczyk]

Is there any corresponding parameter that replaces this? (best to see the diff w/o whitespaces).

[michalkucharczyk]

cc: @altonen

[altonen]

I wonder is there something wrong with merging Versi overrides with Rococo chainspec. If I call build-spec for chainspec-rococo-staging-plain.json, it works but if I call build-spec for chainspec-plain.json, I get the following error:

2024-03-05 14:11:27 Building chain spec
Error:
   0: Other: Error parsing spec file: expected value at line 253 column 5

  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
                                ⋮ 5 frames hidden ⋮
   6: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual::h2448ea279a46891e
      at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/result.rs:1963
   7: polkadot::main::h207b72b9e2003354
      at /builds/parity/mirrors/polkadot-sdk/polkadot/src/main.rs:31
   8: core::ops::function::FnOnce::call_once::hc88137fa2e13fa37
      at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250
                                ⋮ 14 frames hidden ⋮

Are you able to reproduce this?