[feature] Bender.local only overwriting the git remote url

[sebphem-tt]

Looking at the readme:

bender/README.md

Lines 423 to 425 in 52fe767

	overrides:
	common_cells: { path: "/var/magic/common_cells" }
	apb_uart: { git: "git@github.com:pulp-platform/apb_uart.git"}

We show that we can only overwrite the git variable for a dependency with common_cells:

overrides:
  common_cells: { path: "/var/magic/common_cells" }
  apb_uart:     { git: "git@github.com:pulp-platform/apb_uart.git"}

I was looking to use this for my use case, but after trying the following implementation (repo names, groups and servers have been redacted):

Bender.yml contents:

dependencies:
 repo_1:                          { git: "git@git_server:group_1/repo_1.git", rev: "sha_1"}
 repo_2:                          { git: "git@git_server:group_1/repo_2.git", rev: "sha_2"}
 repo_3:                          { git: "git@git_server:group_1/repo_3.git", rev: "sha_3"}

Bender.local contents:

overrides:
 repo_1:                          { git: "git@git_server:group_1/repo_1.git"}
 repo_2:                          { git: "git@git_server:group_1/repo_2.git"}
 repo_3:                          { git: "git@git_server:group_1/repo_3.git"}

When running the following command:
bender checkout

I'm given the following error:

Error: Invalid configuration: In override `repo_1`: Dependency `` with `git` must also specify `rev` or `version`.

Is it possible to update the readme to clarify this is not possible or to add this functionality to Bender?

[micprog]

Currently, the overrides require a struct exactly like in the dependencies section of the Bender.yml. Adding this clarification to the readme makes sense. Adding support for this within Bender should be possible, but will require a bit more work for tuning the internals, and can have unforeseen consequences, especially if a commit is referenced that does not exist in the override repository.

[sebphem-tt]

can have unforeseen consequences, especially if a commit is referenced that does not exist in the override repository.

Bender.local: This optional file contains local configuration overrides. It should be ignored in version control, i.e. added to .gitignore. This file can be used to override dependencies with local variants. It is also used when the user asks for a local working copy of a dependency.

Isn't the point of Bender.local to have more experimental config overrides, since we're told not to check it into the git repository? For example, if we have an air gapped server that we want to update open source projects using the same bender yaml file, I feel like bender should be able to support it. Although I'm glad to hear your thoughts on the matter.