A collection of shorter thoughts, quick updates, and things I’ve learned that don’t warrant a full blog post.
In Nix it is possible to replace a call to builtins.map with lib.catAttrs if the transformation is just pulling out a field. For example: builtins.map (item: item.field) list can instead just be catAttrs "field" list.
Nix CLI’s flake info subcommand is great to find duplicate inputs, nix-melt is too much manual labor.
In Jetpack Compose you can use rememberUpdatedState to capture values that may update over time but without a full restart of the rememberUpdatedState function.
In a Nix REPL you can run :bl inputs.nixpkgs.legacyPackages.aarch64-linux.pkgs.attic-server to build the derivation and create a result link. Can also run :bl nixosConfigurations.ryzenbox.pkgs.attic-client.
FFmpeg lets you mix videos together from different sources based on a zero-indexed map of input files. For the diagram given below, you can do ffmpeg -i input_0.mp4 -i input_1.mp4 -c copy -map 0:v:0 -map 1:a:0 -shortest output.mp4 to take the video from input_0.mp4 and audio from input_1.mp4.
FFmpeg has support for concatenating files with no re-encoding # file_list.txt file 'source1.mp4' file 'source2.mp4' $ ffmpeg -f concat -safe 0 -i file_list.txt -c copy output.mp4
Miniflux requires setting up individual credentials for each integration, and the password can not be the same as your normal account password.
NixOS has a module option in systemd-boot that automatically configures boot entries for Windows without requiring me to copy over the EFI folder [ref]
You can use touch -r old new to copy the timestamp of an older file in a newly created file. Useful for doing bulk re-encodes with FFmpeg that benefit from preserving timestamps.
The default Material3 Scaffold component adds the height of the bottomBar parameter to the inner padding which resulted in the issues I was having with the floating navigation bar. Removing all calls to Modifier.padding and wiring down the padding parameter as contentPadding resolved the problem.
