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CONTRIBUTING.md: rewrite

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CONTRIBUTING.md
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@@ -1,8 +1,14 @@
# Writing profiles
# Contributing a Device Profile
## 1. Writing profiles
Create an appropriate directory and start writing your expression.
When setting an option, use `lib.mkDefault` unless:
- The option *must* be set and the user should get an error if they try to override it.
- The setting should merge with the user's settings (typical for list or set options).
- The option *must* be set and the user should get an error if they try to
override it.
- The setting should merge with the user's settings (typical for list or set
options).
For example:
@@ -15,17 +21,29 @@ For example:
}
```
Try to avoid "opinionated" settings relating to optional features like sound, bluetooth, choice of bootloader etc.
Where possible, use module imports to share code between similar hardware
variants. In most cases, import:
- a cpu module;
- a gpu module;
- either the pc or the laptop module;
- either the HDD or the SSD module.
Where possible, use module imports to share code between similar hardware variants.
Try to avoid "opinionated" settings relating to optional features like sound,
bluetooth, choice of bootloader etc. You can mention these in the readme.
# Performance
Profiles should favor usability and stability, so performance improvements
should either be conservative or be guarded behind additional NixOS module
options. If it makes sense to have a performance-focussed config, it can be
declared in a separate profile.
Profiles should favor usability and stability, so performance improvements should either be conservative or
be guarded behind additional NixOS module options.
## 2. Adding Entry
If it makes sense to have a performance-focussed config, it can be declared in a separate profile.
Link the profile in the table in README.md and in flake.nix.
# Testing
## 3. Testing
Because profiles can only be tested with the appropriate hardware, quality assurance is up to *you*.
Run ./tests/run.py to test building. The test script script will parse all the
profiles from the README.md.
Because profiles can only be tested with the appropriate hardware, quality
assurance is up to *you*.