mirror of
https://github.com/nmattia/niv.git
synced 2024-11-08 08:26:02 +03:00
327 lines
10 KiB
Markdown
327 lines
10 KiB
Markdown
# niv
|
||
|
||
[](https://circleci.com/gh/nmattia/niv)
|
||
[](https://niv.nmattia.com)
|
||
|
||
Painless dependencies for [Nix] projects. Read more in the [Getting started](#getting-started) section below.
|
||
|
||
<p align="center">
|
||
<img src="https://niv.nmattia.com/niv.svg">
|
||
</p>
|
||
|
||
## Install
|
||
|
||
``` bash
|
||
$ nix-env -iA niv -f https://github.com/nmattia/niv/tarball/master
|
||
```
|
||
|
||
## Build
|
||
|
||
Inside the provided nix shell:
|
||
|
||
``` bash
|
||
$ repl
|
||
```
|
||
|
||
Run the test suite with this command:
|
||
|
||
``` bash
|
||
$ ./script/test
|
||
```
|
||
|
||
## Usage
|
||
|
||
`niv` simplifies [adding](#add) and [updating](#update) dependencies in Nix
|
||
projects. It uses a single file, `nix/sources.json`, where it stores the data
|
||
necessary for fetching and updating the packages.
|
||
|
||
* [Add](#add): inserts a package in `nix/sources.json`.
|
||
* [Update](#update): updates one or all packages in `nix/sources.json`.
|
||
* [Drop](#drop): deletes a package from `nix/sources.json`.
|
||
|
||
`niv` has two more utility functions:
|
||
|
||
* [Init](#init): bootstraps a Nix project, in particular creates a
|
||
`nix/sources.json` file containing `niv` and `nixpkgs` as well as a
|
||
`nix/sources.nix` file that returns the sources as a Nix object.
|
||
* [Show](#show): shows the packages' information.
|
||
|
||
### Configuration
|
||
|
||
The following environment variables are read by `niv`:
|
||
|
||
| Name | Note |
|
||
| --------------- | ---- |
|
||
| GITHUB_TOKEN | When set, the value is used to authenticate GitHub API requests. |
|
||
| GITHUB_HOST | The GitHub host to use when fetching packages. Port may be appended here. |
|
||
| GITHUB_API_HOST | The host used when performing GitHub API requests. Use `GITHUB_API_PORT` for specifying the port. |
|
||
| GITHUB_API_PORT | The port used when performing GitHub API requests. Defaults to `443` for secure requests. Defaults to `80` for insecure requests. See also: `GITHUB_INSECURE`. |
|
||
| GITHUB_INSECURE | When set to anything but the empty string, requests are performed over `http` instead of `https`. |
|
||
| GITHUB_PATH | The base path used when performing GitHub API requests. |
|
||
|
||
The next two sections cover [common use cases](#getting-started) and [full command
|
||
description](#commands).
|
||
|
||
### Getting started
|
||
|
||
This section covers common use cases:
|
||
|
||
* [Bootstrapping a Nix project](#bootstrapping-a-nix-project).
|
||
* [Tracking a different nixpkgs branch](#tracking-a-nixpkgs-branch).
|
||
* [Importing packages from GitHub](#importing-packages-from-github).
|
||
* [Fetching packages from custom URLs](#using-custom-urls).
|
||
|
||
#### Bootstrapping a Nix project
|
||
|
||
Use the `init` command when starting a new Nix project or when porting an
|
||
existing Nix project to niv:
|
||
|
||
``` shell
|
||
$ niv init
|
||
...
|
||
$ tree
|
||
.
|
||
└── nix
|
||
├── sources.json
|
||
└── sources.nix
|
||
|
||
1 directory, 2 files
|
||
```
|
||
|
||
The file `nix/sources.json` is the file used by niv to store versions and is
|
||
initialized with niv and nixpkgs:
|
||
|
||
``` json
|
||
{
|
||
"nixpkgs": {
|
||
"url": "https://github.com/NixOS/nixpkgs-channels/archive/109a28ab954a0ad129f7621d468f829981b8b96c.tar.gz",
|
||
"owner": "NixOS",
|
||
"branch": "nixos-19.03",
|
||
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz",
|
||
"repo": "nixpkgs-channels",
|
||
"sha256": "12wnxla7ld4cgpdndaipdh3j4zdalifk287ihxhnmrzrghjahs3q",
|
||
"description": "Nixpkgs/NixOS branches that track the Nixpkgs/NixOS channels",
|
||
"rev": "109a28ab954a0ad129f7621d468f829981b8b96c"
|
||
},
|
||
"niv": {
|
||
"homepage": "https://github.com/nmattia/niv",
|
||
"url": "https://github.com/nmattia/niv/archive/72e77204544527279e8f1e2d982d29503482b8f4.tar.gz",
|
||
"owner": "nmattia",
|
||
"branch": "master",
|
||
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz",
|
||
"repo": "niv",
|
||
"sha256": "1zjcyzxhq9iwxh58j5d7sx1vz5s3r1f6gpmnfgj2a3rxmclwvn3c",
|
||
"description": "Easy dependency management for Nix projects",
|
||
"rev": "72e77204544527279e8f1e2d982d29503482b8f4"
|
||
}
|
||
}
|
||
```
|
||
|
||
To use those dependencies `import` the file `nix/sources.nix`, e.g.:
|
||
|
||
``` nix
|
||
{ sources ? import ./sources.nix }: # import the sources
|
||
with
|
||
{ overlay = _: pkgs:
|
||
{ niv = import sources.niv {}; # use the sources :)
|
||
};
|
||
};
|
||
import sources.nixpkgs # and use them again!
|
||
{ overlays = [ overlay ] ; config = {}; }
|
||
```
|
||
|
||
#### Tracking a nixpkgs branch
|
||
|
||
The `init` command sets the `nix/sources.json` file to track the latest commit
|
||
present on nixpkgs 19.03 when the command was run. Run the following command to
|
||
update it:
|
||
|
||
``` shell
|
||
$ niv update nixpkgs
|
||
```
|
||
|
||
To change the branch being tracked run this command:
|
||
|
||
``` shell
|
||
$ niv update nixpkgs -b nixos-19.03 # equivalent to --branch nixos-19.03
|
||
```
|
||
|
||
#### Importing packages from GitHub
|
||
|
||
The `add` command will infer information about the package being added, when
|
||
possible. This works very well for GitHub repositories. Run this command to add
|
||
[jq] to your project:
|
||
|
||
|
||
``` shell
|
||
$ niv add stedolan/jq
|
||
```
|
||
|
||
The following data was added in `nix/sources.json` for `jq`:
|
||
|
||
``` json
|
||
{
|
||
"homepage": "http://stedolan.github.io/jq/",
|
||
"url": "https://github.com/stedolan/jq/archive/9fa2e51099c55af56e3e541dc4b399f11de74abe.tar.gz",
|
||
"owner": "stedolan",
|
||
"branch": "master",
|
||
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz",
|
||
"repo": "jq",
|
||
"sha256": "0819rvk8057qgcqvgn7fpldvly2pfdw9fxcjrlqa8gr59p8a1cic",
|
||
"description": "Command-line JSON processor",
|
||
"rev": "9fa2e51099c55af56e3e541dc4b399f11de74abe"
|
||
}
|
||
```
|
||
|
||
#### Using custom URLs
|
||
|
||
It is possible to use niv to fetch packages from custom URLs. Run this command
|
||
to add the Haskell compiler [GHC] to your `nix/sources.json`:
|
||
|
||
``` shell
|
||
$ niv add ghc \
|
||
-v 8.4.3 \
|
||
-t 'https://downloads.haskell.org/~ghc/<version>/ghc-<version>-i386-deb8-linux.tar.xz'
|
||
```
|
||
|
||
The option `-v` sets the "version" attribute to `8.4.3`. The option `-t` sets a
|
||
template that can be reused by niv when fetching a new URL (see the
|
||
documentation for [add](#add) and [update](#update)).
|
||
|
||
For updating the version of GHC used run this command:
|
||
|
||
``` shell
|
||
$ niv update ghc -v 8.6.2
|
||
```
|
||
|
||
### Commands
|
||
|
||
```
|
||
niv - dependency manager for Nix projects
|
||
|
||
version: 0.2.2
|
||
|
||
Usage: niv COMMAND
|
||
|
||
Available options:
|
||
-h,--help Show this help text
|
||
|
||
Available commands:
|
||
init Initialize a Nix project. Existing files won't be
|
||
modified.
|
||
add Add dependency
|
||
show
|
||
update Update dependencies
|
||
modify Modify dependency
|
||
drop Drop dependency
|
||
|
||
```
|
||
|
||
#### Add
|
||
|
||
```
|
||
Examples:
|
||
|
||
niv add stedolan/jq
|
||
niv add NixOS/nixpkgs-channels -n nixpkgs -b nixos-19.03
|
||
niv add my-package -v alpha-0.1 -t http://example.com/archive/<version>.zip
|
||
|
||
Usage: niv add [-n|--name NAME] PACKAGE ([-a|--attribute KEY=VAL] |
|
||
[-s|--string-attribute KEY=VAL] | [-b|--branch BRANCH] |
|
||
[-o|--owner OWNER] | [-r|--repo REPO] | [-v|--version VERSION] |
|
||
[-t|--template URL] | [-T|--type TYPE])
|
||
Add dependency
|
||
|
||
Available options:
|
||
-n,--name NAME Set the package name to <NAME>
|
||
-a,--attribute KEY=VAL Set the package spec attribute <KEY> to <VAL>, where
|
||
<VAL> may be JSON.
|
||
-s,--string-attribute KEY=VAL
|
||
Set the package spec attribute <KEY> to <VAL>.
|
||
-b,--branch BRANCH Equivalent to --attribute branch=<BRANCH>
|
||
-o,--owner OWNER Equivalent to --attribute owner=<OWNER>
|
||
-r,--repo REPO Equivalent to --attribute repo=<REPO>
|
||
-v,--version VERSION Equivalent to --attribute version=<VERSION>
|
||
-t,--template URL Used during 'update' when building URL. Occurrences
|
||
of <foo> are replaced with attribute 'foo'.
|
||
-T,--type TYPE The type of the URL target. The value can be either
|
||
'file' or 'tarball'. If not set, the value is
|
||
inferred from the suffix of the URL.
|
||
-h,--help Show this help text
|
||
|
||
```
|
||
|
||
#### Update
|
||
|
||
```
|
||
Examples:
|
||
|
||
niv update # update all packages
|
||
niv update nixpkgs # update nixpkgs
|
||
niv update my-package -v beta-0.2 # update my-package to version "beta-0.2"
|
||
|
||
Usage: niv update [PACKAGE] ([-a|--attribute KEY=VAL] |
|
||
[-s|--string-attribute KEY=VAL] | [-b|--branch BRANCH] |
|
||
[-o|--owner OWNER] | [-r|--repo REPO] | [-v|--version VERSION]
|
||
| [-t|--template URL] | [-T|--type TYPE])
|
||
Update dependencies
|
||
|
||
Available options:
|
||
-a,--attribute KEY=VAL Set the package spec attribute <KEY> to <VAL>, where
|
||
<VAL> may be JSON.
|
||
-s,--string-attribute KEY=VAL
|
||
Set the package spec attribute <KEY> to <VAL>.
|
||
-b,--branch BRANCH Equivalent to --attribute branch=<BRANCH>
|
||
-o,--owner OWNER Equivalent to --attribute owner=<OWNER>
|
||
-r,--repo REPO Equivalent to --attribute repo=<REPO>
|
||
-v,--version VERSION Equivalent to --attribute version=<VERSION>
|
||
-t,--template URL Used during 'update' when building URL. Occurrences
|
||
of <foo> are replaced with attribute 'foo'.
|
||
-T,--type TYPE The type of the URL target. The value can be either
|
||
'file' or 'tarball'. If not set, the value is
|
||
inferred from the suffix of the URL.
|
||
-h,--help Show this help text
|
||
|
||
```
|
||
|
||
#### Drop
|
||
|
||
```
|
||
Examples:
|
||
|
||
niv drop jq
|
||
niv drop my-package version
|
||
|
||
Usage: niv drop PACKAGE [ATTRIBUTE]
|
||
Drop dependency
|
||
|
||
Available options:
|
||
-h,--help Show this help text
|
||
|
||
```
|
||
|
||
#### Init
|
||
|
||
```
|
||
Usage: niv init
|
||
Initialize a Nix project. Existing files won't be modified.
|
||
|
||
Available options:
|
||
-h,--help Show this help text
|
||
|
||
```
|
||
|
||
#### show
|
||
|
||
```
|
||
Usage: niv show [PACKAGE]
|
||
|
||
Available options:
|
||
-h,--help Show this help text
|
||
|
||
```
|
||
|
||
[Nix]: https://nixos.org/nix/
|
||
[jq]: https://stedolan.github.io/jq/
|
||
[GHC]: https://www.haskell.org/ghc/
|