nix-super/doc/manual/src/installation/building-source.md

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# Building Nix from Source
After cloning Nix's Git repository, issue the following commands:
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```console
$ autoreconf -vfi
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$ ./configure options...
$ make
$ make install
```
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Nix requires GNU Make so you may need to invoke `gmake` instead.
The installation path can be specified by passing the `--prefix=prefix`
to `configure`. The default installation directory is `/usr/local`. You
can change this to any location you like. You must have write permission
to the *prefix* path.
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Nix keeps its *store* (the place where packages are stored) in
`/nix/store` by default. This can be changed using
`--with-store-dir=path`.
> **Warning**
>
> It is best *not* to change the Nix store from its default, since doing
> so makes it impossible to use pre-built binaries from the standard
> Nixpkgs channels — that is, all packages will need to be built from
> source.
Nix keeps state (such as its database and log files) in `/nix/var` by
default. This can be changed using `--localstatedir=path`.