This PR changes the default credentials provider used in developments
builds of Zed to the development credentials provider.
Previously this required setting `ZED_DEVELOPMENT_AUTH=1` in order to
opt-in to the development credentials provider.
This led to confusion for new Zed employees who did not know that this
environment variable existed.
If you do need to interact with the system keychain for some reason, you
can run Zed with:
```
ZED_DEVELOPMENT_USE_KEYCHAIN=1
```
`ZED_DEVELOPMENT_AUTH` is dead. Long live Zed development auth!
Release Notes:
- N/A
This PR adds a new `CredentialsProvider` trait that abstracts over
interacting with the system keychain.
We had previously introduced a version of this scoped just to Zed auth
in https://github.com/zed-industries/zed/pull/11505.
However, after landing https://github.com/zed-industries/zed/pull/25123,
we now have a similar issue with the credentials for language model
providers that are also stored in the keychain (and thus also produce a
spam of popups when running a development build of Zed).
This PR takes the existing approach and makes it more generic, such that
we can use it everywhere that we need to read/store credentials in the
keychain.
There are still two credential provider implementations:
- `KeychainCredentialsProvider` will interact with the system keychain
(using the existing GPUI APIs)
- `DevelopmentCredentialsProvider` will use a local file on the file
system
We only use the `DevelopmentCredentialsProvider` when:
1. We are running a development build of Zed
2. The `ZED_DEVELOPMENT_AUTH` environment variable is set
- I am considering removing the need for this and making it the default,
but that will be explored in a follow-up PR.
Release Notes:
- N/A
