dev-flakes

A collection of Nix flake templates for reproducible development environments. Each template provides a ready-to-use devShell with the relevant tools for the respective language or use case.

Inspired by the-nix-way/dev-templates.

Prerequisites

• Nix with flakes enabled
• Optional: direnv for automatic shell loading

Usage

One-time start (without direnv)

nix flake init -t github:blckr/dev-flakes#<template>
nix develop

With direnv (recommended)

The templates already include an .envrc with use flake. After init, just run:

nix flake init -t github:blckr/dev-flakes#<template>
direnv allow

The development environment will then be activated automatically when entering the directory.

Templates

Name	Alias	Contents
c	cpp	clang-tools, cmake, conan, cppcheck, doxygen, gtest, lcov, vcpkg, gdb
go	–	Go 1.26, gopls, golangci-lint, delve, gotools, gcc
rust	–	rustc, cargo, rust-analyzer, rustfmt, clippy, gdb
python	–	Python 3.13, venv hook, pip
java	–	JDK 23, Maven, Gradle, Lombok
kotlin	–	Kotlin + JDK 23, Gradle
jupyter	–	Python 3.11, ipykernel, Poetry (for scripts/notebooks)
jupyter-notebook	–	JupyterLab, ipywidgets, ipympl, jupyterlab-git, Node.js
typst	–	typst, tinymist, typstyle, pandoc
typst-rotis	–	like typst, additionally includes Rotis font (LUH network)
linux-full	linux	LLVM/Clang 18, QEMU, guestfs-tools, gdb – Linux kernel development
linux-llvm	–	LLVM/Clang 18, QEMU, gdb, Linux kernel sources as inputsFrom
linux-hx	–	Helix configuration (languages.toml) for kernel development
platformio	–	PlatformIO, clang-tools, cmake, conan, cppcheck, gdb

Linux Kernel Development

The linux-full template includes a meta/ directory with a Justfile, NixOS VM configuration, and kernel config templates for x86 and arm64.

nix flake init -t github:blckr/dev-flakes#linux
# Clone the Linux repository to /linux
make nconfig          # Configure the kernel
just gen-compile-commands
just make
just qemu             # Start the VM (login: root or eval)

For Helix editor support in the kernel directory:

nix flake init -t github:blckr/dev-flakes#linux-hx

Changing the Python Version

In the python template, the Python version can be changed at the top of flake.nix:

version = "3.13";  # set to desired version

After the change, delete .venv and reload the shell.

Changing the Go Version

In the go template, change the version number at the beginning of flake.nix:

goVersion = 26;  # corresponds to go_1_26