usage #

Vidya desktop app that shows live disk and network I/O as circular gauges.

Dark charcoal shell, accent-blue arcs, auto-scaling ceilings, and a per-device breakdown — samples /proc/diskstats and /proc/net/dev about twice a second.

Run #

From this checkout (with sibling ../vidya):

nix run                    # apps.default → cargo build + gtk-launch .desktop (icon)
nix run .#desktop          # same
nix run .#usage            # cargo build + run binary only (no .desktop)
nix run .#build            # cargo build --release only
nix run .#package          # pure store binary
nix run .#package-desktop  # pure package via its .desktop

apps.default / apps.desktop cargo-build, install usage.desktop + hicolor icons into $XDG_DATA_HOME (~/.local/share by default — required on Wayland/GNOME; a private share dir is invisible to the shell), refresh icon/desktop caches, then gtk-launch usage. The binary also embeds the PNG via vidya::with_app_icon_id (used on X11; Wayland window icons come from the FreeDesktop entry). Incremental builds go into ./target/.

Optional interactive shell:

nix develop
cargo run --release

Packaged install (pure Nix derivation — may use remote builders):

nix build .#usage
./result/bin/usage
# also: result/share/applications/usage.desktop
#       result/share/icons/hicolor/.../apps/usage.{svg,png}

What you see #

Each gauge fills against an auto-scaling peak (nice 1/2/5×10ⁿ ceiling) so idle and busy machines both stay readable. Heat colors shift accent → warning → destructive as the arc fills.

Below the gauges: cards listing individual disks and network interfaces with mini read/write bars, plus a process table (name, path, disk write rate, write syscall frequency) from /proc/[pid]/{io,exe}.

Requirements #

• Linux (/proc)
• Wayland or X11 (egui / eframe)

Nix #

Apps need a live checkout next to ../vidya. The packaged packages.usage stages flake input vidya for pure builds.

License #

MIT