# Installation

> UForm for Mojo

Let Pixi build the package from source, with no channel to add and no linker flag to pass; the engine arrives as its run dependency, in the environment prefix `mojo build` bakes as runpath.

```toml
[workspace]
preview = ["pixi-build"]

[dependencies]
uform_mojo = { git = "https://github.com/unum-cloud/UForm", subdirectory = "mojo", tag = "v4.0.0-rc.1" }
```

From a checkout, `pixi run test` builds the engine through the tree's own CMake, with the host codecs from conda-forge, and runs `mojo/test.mojo` against it.
The model checks need a checkpoint: `uform_tiny_checkpoint <path>` writes a tiny one, and `UFORM_TEST_CHECKPOINT=<path> pixi run test` runs them; without it they are skipped.
On Linux the environment pins a glibc 2.34 sysroot, which the MAX runtime `mojo build` links against needs.