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https://github.com/amanjeev/somenix
AJ's NixOS config
https://github.com/amanjeev/somenix
Last synced: 10 days ago
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AJ's NixOS config
- Host: GitHub
- URL: https://github.com/amanjeev/somenix
- Owner: amanjeev
- License: agpl-3.0
- Created: 2019-11-06T02:42:58.000Z (about 5 years ago)
- Default Branch: primary
- Last Pushed: 2024-01-23T17:26:12.000Z (10 months ago)
- Last Synced: 2024-01-23T18:47:49.991Z (10 months ago)
- Language: Nix
- Homepage:
- Size: 431 KB
- Stars: 5
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# NixOS Configs using Flakes
## How to change and install
1. Clone this repo
2. For a new machine
- add new platform in directory under `./platform/`
- make appropriate changes from `configuration.nix` and `hadrware-configuration.nix`
- add the machine to `flake.nix`
3. Run the `nixos-rebuild`: `sudo nixos-rebuild switch --install-bootloader --flake .#`
4. Move `./confs` files to their appropriate locations
## Update (not upgrade)
1. `cd ~/somenix`
2. `sudo nix flake update`
3. `sudo nixos-rebuild switch --flake .#machine-name`
## List generations
1. `cd ~/somenix`
2. `sudo nix-env -p /nix/var/nix/profiles/system --list-generations`
## Garbage collection
1. `cd ~/somenix`
2. `sudo nix-collect-garbage --delete-older-than 1d`
3. `sudo nixos-rebuild switch --flake .#machine-name`
## Add a new package
1. Create a new file in [packages](./packages/) directory.
2. Add various contents that your heart pleases. This is necessary because your heart will bleed debugging it.
3. Pray.
4. Add the call in [flake.nix](./flake.nix).
## Debugging
### Build locally while developing
1. Use command `ix-build -E 'with import { }; callPackage ./packages/yourpackage.nix {}' --show-trace`
2. Run `result/bin/yourpackage` if it builds fine
### The SHA256 stuff
You may need various SHAs. You will need to try many many things. As an example, look at [nrfdfu.nix](./packages/nrfdfu.nix). It has two SHAs, one for `fetchFromGitHub` and other for `rustPlatform.buildRustPackage`.
#### Pushing all 0s.
```
> ERROR: cargoSha256 is out of date
>
> Cargo.lock is not the same in /build/nrfdfu-rs-v0.1.3-vendor.tar.gz
>
> To fix the issue:
> 1. Use "0000000000000000000000000000000000000000000000000000" as the cargoSha256 value
> 2. Build the derivation and wait for it to fail with a hash mismatch
> 3. Copy the 'got: sha256:' value back into the cargoSha256 field
>
```
#### Changing cargoHash to others
Like using `carghoHash` to `cargoSha256` will give you better logs
#### SHA from URL fetching
```
nix-prefetch-url --unpack --type sha256 https://github.com/user/mypackage/archive/vx.y.z.tar.gz
```
#### SRI format
You may need to convert the SHA256 into SRI format using this command
```
nix hash to-sri --type sha256 0784xz1svjfzsvcd0ghyrjqragvrasll674fn96hg660bv0df5gc
```
## Gratitude
- [Spacekookie](https://twitter.com/spacekookie) for introducing me and giving me my first NixOS config to copy
- [Ana, Hoverbear](https://twitter.com/a_hoverbear) for showing me the light of Nix Flakes and giving me the setup to copy
- [Graham](https://twitter.com/grhmc/) on being in the NixOS community and constantly improving it
- NixOS folks who constantly improve things
- Friends of this land who help me out when I have questions