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Add RTL-SDR support; switch to Limine + SDDM; drop Hyprland-era leftovers
RTL-SDR Blog V4. The V4 swapped the R820T2 tuner for an R828D behind a built-in HF upconverter, so it needs the rtlsdrblog fork of librtlsdr -- the stock Osmocom one reports no supported devices. pkgs.rtl-sdr on this channel already is that fork (rtl-sdr-blog 1.3.5), so hardware.rtl-sdr's default package is correct as-is. That also blacklists the DVB-T drivers that otherwise grab the dongle on plug-in, and ships udev rules handing it to plugdev at 0660 -- hence plugdev in the user's groups, or every SDR app needs root. Apps: SDR++ and rtl_433; the rtl_* CLI tools come with the driver. Both SDR apps are overridden to drop hardware we do not own. SDR++ and rtl_433 default to supporting every radio ever made, which pulled in UHD (1.4 GB of USRP firmware), BladeRF and LimeSuite. gqrx was the original choice but reaches UHD through gr-osmosdr's gr-uhd feature; SDR++ uses no GNU Radio at all. Per-package overrides rather than a global overlay, so nothing else is affected. Bootloader: systemd-boot -> Limine, themed to match the Gruvbox icon theme. Limine installs to its own EFI directory and adds its own NVRAM entry, so systemd-boot stays on the ESP as a firmware-menu fallback. Display manager: lightdm -> SDDM with wayland.enable. Budgie in this channel ships only a Wayland session (labwc) and was already running as one; lightdm just handles that badly. SDDM's greeter runs on weston, not kwin, so no KDE compositor comes along. Qt defaults over Budgie's GTK/MATE apps. The Budgie module force-enables gnome-terminal and installs nemo, eom, pluma, atril, engrampa, mate-calc and mate-system-monitor; environment.budgie.excludePackages drops all of them in favour of konsole, dolphin, gwenview, kate, okular, ark, kcalc and plasma-systemmonitor. default-apps.nix rewritten to match: 113 associations, video to vlc, audio to elisa, text/code to kate, and /etc/xdg/xdg-terminals.list pointing at konsole. Fixes a real bug there -- inode/directory was mapped to gwenview, so folders opened in the image viewer. Hyprland-era leftovers removed. system-telemetry and weather-fetch fed Quickshell panels that no longer exist; brightness-ctl and hotspot-start lost their keybinds. jq went with weather-fetch. Also dropped gnome-screenshot, playerctl and imv. vault-toggle and strip-metadata stay -- they never depended on Hyprland. Comments trimmed throughout: deleted anything restating the code, kept the ones recording a why you cannot recover by reading it (systemd.gpt_auto, disable_ertm, ptrace_scope, the stable ethernet MAC, the mimeapps.list parser gotcha). system.nix went 225 -> 166 lines. README rewritten -- it still described Hyprland, Quickshell and Kitty. Screenshot dropped.
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14 changed files with 177 additions and 396 deletions
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{ config, pkgs, ... }:
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let
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# Both SDR++ and rtl_433 default to supporting every radio ever made, which
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# drags in UHD (USRP firmware), BladeRF and LimeSuite — ~1.5 GB for hardware
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# we don't own. These two overrides cut that down to the RTL-SDR paths.
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soapysdrLean = pkgs.soapysdr.override {
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extraPackages = with pkgs; [ soapyrtlsdr soapyremote ];
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};
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rtl433Lean = pkgs.rtl_433.override { soapysdr-with-plugins = soapysdrLean; };
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# Leaves the RTL-SDR, rtl_tcp, file and network sources on.
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sdrppLean = pkgs.sdrpp.override {
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soapy_source = false;
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bladerf_source = false;
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limesdr_source = false;
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plutosdr_source = false;
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airspy_source = false;
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airspyhf_source = false;
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hermes_source = false;
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rfspace_source = false;
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dragonlabs_source = false;
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spectran_http_source = false;
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};
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in
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{
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# Every installed package — GUI apps, CLI tools, and dev toolchains alike.
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# If it's "install X", it goes here.
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users.users."nexoniarz".packages = with pkgs; [
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tumbler # Thumbnails (paired with services.tumbler.enable; also used by Nemo)
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gnome-screenshot # Screenshot capture (X11)
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imv # Image viewer
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brightnessctl # Backlight brightness (laptop panels)
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ddcutil # DDC/CI brightness (external monitors)
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lm_sensors # sensors-detect helps ddcutil find I2C buses
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networkmanager # nmcli, for the Wi-Fi hotspot toggle
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xdg-user-dirs # Resolves localized folder names (Obrazy, not Pictures, on pl_PL)
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playerctl # MPRIS media control, for the function-key media binds
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tumbler
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brightnessctl
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ddcutil
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lm_sensors # sensors-detect helps ddcutil find the I2C buses
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networkmanager
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xdg-user-dirs # Resolves localized folder names (Obrazy, not Pictures)
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# Apps
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blender
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@ -25,36 +44,31 @@
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filezilla
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chromium
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obs-studio
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easyeffects # Real-time mic/output effects (pitch, EQ, ...) — auto-creates a
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# selectable "Easy Effects Source" virtual mic once an Input effect
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# is added, no manual PipeWire routing needed
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qpwgraph # Patchbay GUI — wires EasyEffects'/Soundux's output into the
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# standalone "Virtual Microphone Sink" (see system.nix)
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# Soundux (soundboard) isn't packaged in this nixpkgs channel anymore —
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# installed via Flatpak instead (io.github.Soundux).
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sdrppLean
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rtl433Lean
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# Games
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prismlauncher
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pkgs.osu-lazer-bin
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osu-lazer-bin
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# Dev: compilers, runtimes, languages
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# Dev
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glibc
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musl
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cmake
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gnumake # Provides the 'make' command
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gnumake
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gcc
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python3
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openjdk25
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claude-code # AI Developer Assistant
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claude-code
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];
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# Global command-line utilities available everywhere
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environment.systemPackages = with pkgs; [
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git
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gh # GitHub CLI — was only installed ad-hoc before (login didn't survive)
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gh
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vim
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fastfetch
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gparted
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efibootmgr
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firejail
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gnupg
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lmstudio
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@ -66,10 +80,11 @@
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kdePackages.kate
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kdePackages.qqc2-desktop-style
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linphonePackages.linphone-desktop
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kdePackages.kcalc # Calculator (nothing filled this role before)
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kdePackages.okular # Document/PDF viewer (nothing filled this role before)
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kdePackages.elisa # Audio player (vlc/ffmpeg cover video already; nothing dedicated for audio)
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kdePackages.konsole # Terminal (replaces kitty)
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kdePackages.dolphin # File manager (replaces Thunar, alongside Budgie's default Nemo)
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kdePackages.kcalc
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kdePackages.okular
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kdePackages.elisa
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kdePackages.konsole
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kdePackages.dolphin
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kdePackages.plasma-systemmonitor
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];
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}
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