README.md: rework

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[![MIT License](https://img.shields.io/github/license/divnix/devos)][mit]
[![NixOS](https://img.shields.io/badge/NixOS-unstable-blue.svg?style=flat&logo=NixOS&logoColor=white)](https://nixos.org)
[![MIT License](https://img.shields.io/github/license/divnix/devos)][mit]
[![Chat](https://img.shields.io/matrix/devos:nixos.org.svg?label=%23devos%3Anixos.org&logo=matrix&server_fqdn=matrix.org)][matrix]
> #### ⚠ Advisory ⚠
> DevOS requires the [flakes][flakes] feature available via an _experimental_
> branch of [nix][nix]. Until nix 3.0 is released, this project
> should be considered unstable, though quite usable as flakes have been
> maturing _well_ [for a while](https://github.com/divnix/devos/tree/17713c22d07c54525c728c62060a0428b76dee3b).
> branch of [nix][nix]. Until nix 2.4 is released, this project
> should be considered unstable.
# Introduction
DevOS grants a simple template to use, deploy and manage [NixOS][nixos] systems
for personal and productive use. A sane repository structure is provided,
integrating several popular projects like [home-manager][home-manager],
### Why?
Make an awesome template for NixOS users, with consideration for common tools like [home-manager][home-manager],
[devshell][devshell], and [more](./doc/integrations).
Striving for ___nix first™___ solutions with unobstrusive implementations,
a [flake centric][flake-doc] approach is taken for useful conveniences such as
[automatic source updates](./pkgs#automatic-source-updates).
### No. Why _flakes_?
Flakes are a part of an explicit push to improve [Nix's UI](https://github.com/NixOS/nix/blob/master/doc/manual/src/contributing/cli-guideline.md), and have become an intergral part of that effort.
Skip the indeterminate nature of other systems, _and_ the perceived
tedium of bootstrapping Nix. It's easier than you think!
They also make [Nix expressions](https://nixos.org/manual/nix/unstable/expressions/expression-syntax.html) easier to distribute and reuse with convient [flake references](https://github.com/NixOS/nix/blob/master/src/nix/flake.md#flake-references) for building or using packages, modules, and whole systems.
## Getting Started
Check out the [guide](https://devos.divnix.com/start) to get up and running.
Also, have a look at [_flake.nix_][toc]. If anything is not immediately
discoverable via "[`digga`][digga]'s [`mkFlake`][mk-flake],
please file a bug report.
### Status: Beta
Although this project has already matured quite a bit, especially through
recent outfactoring of [`digga`][digga], a fair amount of api polishing is still
expected. There are unstable versions (0._x_._x_) to help users keep track
of changes and progress.
## Getting Started
Check out the [guide](https://devos.divnix.com/start) to get up and running.
Also, have a look at [_flake.nix_][toc]. If anything is not immediately
discoverable from there through [`digga`][digga] library's [`mkFlake`][mk-flake],
please file a bug report.
of changes and progress, and a [`develop`](https://github.com/divnix/devos/tree/develop) branch for the brave 😜
## In the Wild
The author maintains his own branch, so you can take inspiration, direction, or
make critical comments about the [code][please]. 😜
## Motivation
NixOS provides an amazing abstraction to manage our environment, but that new
power can sometimes bring feelings of overwhelm and confusion. Having a turing
complete system can easily lead to unlimited complexity if we do it wrong.
Instead, we should have a community consensus on how to manage a NixOS system
and its satellite projects, from which best practices can evolve.
___The future is declarative! 🎉___
## Community Profiles
There are two branches from which to choose: [core][core] and
[community][community]. The community branch builds on core and includes
several ready-made profiles for discretionary use.
Every package and NixOS profile declared in community is uploaded to
[cachix](./integrations/cachix.md), so everything provided is available
without building anything. This is especially useful for the packages that are
[overridden](./concepts/overrides.md) from master, as without the cache,
rebuilds are quite frequent.
* The original [authors][please]
## Shoulders
This work does not reinvent the wheel. It stands on the [shoulders of the
@ -113,3 +87,4 @@ DevOS is licensed under the [MIT License][mit].
[community]: https://github.com/divnix/devos/tree/community
[dotfiles]: https://github.com/hlissner/dotfiles
[please]: https://github.com/nrdxp/devos/tree/nrd
[matrix]: https://matrix.to/#/#devos:nixos.org