106 lines
3.4 KiB
Nix
106 lines
3.4 KiB
Nix
{ pkgs ? import <nixpkgs> { } }:
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# FHS development shell for somafm-tui.
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#
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# Why FHS? uv installs manylinux wheels from PyPI (notably NumPy) that expect
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# libstdc++.so.6 and friends in the usual FHS locations (/usr/lib, /lib).
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# NixOS doesn't populate those paths, so a normal mkShell fails at runtime with
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# libstdc++.so.6: cannot open shared object file
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# buildFHSEnv gives us a tiny FHS root with the Nix store mounted, and
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# stdenv.cc.cc.lib supplies the missing C++ runtime.
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#
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# nix-shell # enter the FHS shell
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# rm -rf .venv # once, if the venv was created by an older setup
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# uv sync # install Python deps with uv
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# uv run somafm-tui # start the radio
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#
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# Note: `nix-shell --run "..."` is not supported by FHS shell.nix files; enter
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# the shell interactively and run commands there.
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(pkgs.buildFHSEnv {
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name = "somafm-tui";
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targetPkgs = pkgs: with pkgs; [
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# --- Python toolchain; uv owns all Python dependencies ---------------
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# Nix's default python3 (not a patch/minor pin). Outside this shell,
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# uv accepts any CPython >= 3.10, or downloads one if needed.
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python3
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uv
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# --- the actual fix for NumPy/manylinux wheels ------------------------
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stdenv.cc.cc.lib # libstdc++.so.6
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zlib
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# --- radio ------------------------------------------------------------
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mpv
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ffmpeg
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dbus
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playerctl
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tmux # detect the outer terminal inside tmux for TGP
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# --- audio backends that mpv / ffplay load at runtime -----------------
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alsa-lib
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libpulseaudio
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pipewire
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pulseaudio # parec/pactl: synced spectrum capture (works with PipeWire)
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# --- shell / terminal helpers -----------------------------------------
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bashInteractive
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ncurses
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coreutils
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findutils
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gnused
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gnugrep
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which
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curl
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cacert
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git
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# --- mpv/ffmpeg optional display libs (harmless with --no-video) ------
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libGL
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libxkbcommon
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wayland
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libx11
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libxext
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];
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profile = ''
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# Use the shell's interpreter here; this is not a project-wide pin.
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export UV_PYTHON="${pkgs.python3}/bin/python3"
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export UV_PYTHON_DOWNLOADS=never
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export UV_PROJECT_ENVIRONMENT="${toString ./.}/.venv"
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export UV_LINK_MODE=copy
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export SSL_CERT_FILE="${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
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# Audio/MPRIS sockets live under XDG_RUNTIME_DIR.
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if [ -z "$XDG_RUNTIME_DIR" ] && [ -d "/run/user/$(id -u)" ]; then
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export XDG_RUNTIME_DIR="/run/user/$(id -u)"
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fi
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# A session bus is what lets desktop media widgets see MPRIS.
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if [ -z "$DBUS_SESSION_BUS_ADDRESS" ] && [ -n "$XDG_RUNTIME_DIR" ] \
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&& [ -S "$XDG_RUNTIME_DIR/bus" ]; then
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export DBUS_SESSION_BUS_ADDRESS="unix:path=$XDG_RUNTIME_DIR/bus"
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fi
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export PS1='\[\e[1;35m\][somafm-tui]\[\e[0m\] \w \$ '
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echo ""
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echo " somafm-tui — FHS dev shell"
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echo " --------------------------"
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echo " uv sync install / update python deps"
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echo " uv run somafm-tui start the radio"
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echo ""
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echo " python : $(python3 --version 2>&1)"
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echo " uv : $(uv --version 2>&1)"
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echo " mpv : $(mpv --version 2>&1 | head -n1)"
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echo " ffmpeg : $(ffmpeg -version 2>&1 | head -n1)"
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echo ""
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echo " If NumPy still fails to load, recreate the venv once:"
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echo " rm -rf .venv && uv sync"
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echo ""
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'';
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runScript = "bash";
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}).env
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