Fast, Declarative, Reproducible, and Composable Developer Environments
Build, share, and run your local development environments with a single command. Without containers.
Get StartedPick from 80000+ prebuilt packages
Any language or tool widely adopted in the industry, prebuilt for Linux/macOS and X64/Arm64. Works with WSL.
Search packages and load them in your developer environment.
Learn more about the basic features.
$ cat devenv.nix { pkgs, ... }: { env.GREET = "determinism"; packages = [ pkgs.git ]; enterShell = "echo hello $GREET"; } $ git --version git: command not found $ devenv shell hello determinism (devenv) $ git --version git version 2.38.1
Start development processes
Define your development processes in a declarative way and start them with devenv up.
Pick from a number of community maintained modules like PostgreSQL, Redis, MySQL, and more are being added each day.
$ cat devenv.nix { pkgs, ... }: { processes.ping.exec = "ping example.com"; postgres.enable = true; } $ devenv up Starting processes ... 20:37:44 system | ping.1 started (pid=94686) 20:37:44 system | postgres.1 started (pid=94688) ...
Supports tooling for your favorite languages
A single toggle to load the compiler/tools/language server for your favorite language.
$ cat devenv.nix
{ pkgs, ... }: {
languages.python.enable = true;
languages.rust.enable = true;
languages.go.enable = true;
languages.ruby.enable = true;
languages.elm.enable = true;
languages.kotlin.enable = true;
languages.php.enable = true;
languages.typescript.enable = true;
languages.perl.enable = true;
languages.javascript.enable = true;
}Automatically load your environment
Combined with direnv, your shell will automatically load your environment when you enter the project directory.
$ cd myproject
direnv: loading ~/myproject/.envrc
Building shell ...
Entering shell ...
(devenv) $ cd ..
direnv: unloading
$
Scripts and pre-commit hooks
Define scripts and git pre-commit hooks to automate your development workflow.
$ cat devenv.nix
{ pkgs, ... }: {
# format Python code on git commit and CI
pre-commit.hooks.black.enable = true;
# aliases
scripts.gd.exec = "git diff --stat";
}
$ devenv shell gd
pre-commit installed at .git/hooks/pre-commit
devenv.lock | 74 ++++++
1 file changed, 71 insertions(+), 0 deletions(-)
Open Source, built on top of Nix
After 10 years of experience with the Nix ecosystem, we've built an interface that's intuitive to use.
We're leveraging the power of Nix to build a new generation of developer tools: cachix.org (2018), nix.dev (2020), devenv.sh (2022).
Built by
