The Nix package manager can be used to build the firmware in a reliable way without having to install all the dependencies on your system. All that is needed is to have the nix package manager installed with Flake support enabled. The easiest if nix is not installed yet is to install it from zero to Nix. Nix support in this project is currently experimental.
Development shell
To get into a development shell where required tools for building the project are present:
nix develop
Building with Nix
The following command will produce a clean build for the Crazyflie 2. The command can be changed to build for other target:
nix develop -i --command bash -c 'make mrproper && make cf2_defconfig && make -j`nproc`'
Updating the flake
One great advantage of working with Nix is that the versions are locked in the nix.lock file. This means that build are reproducable. Running nix flake update can be used to update dependencies. The file nix.lock then need to be commited and pushed.