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Readme: update getting started guide

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1. Mention that `hub` has to be setup first.

2. `nixpkgs-update` can now generate the JSON file on its own without needing the
   `repology-api` steps.

3. Mention that the `update` cmds require `--additionalUpdates`

4. Since the `nixpkgs-update.nix` file is taking `src = ./.;`, it tends to
   recompile everything on any change to something like the JSON file. It's
   probably better to just run `nix-build` once and then re-use the binary.
This commit is contained in:
Benjamin Hipple 2020-02-17 18:47:15 -05:00
parent 08fbdd6742
commit d54d6e8135
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README.md
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@ -100,16 +100,41 @@ test a package with one command.
# Instructions
1. Clone this repository:
1. Clone this repository and build `nixpkgs-update`:
```
git clone https://github.com/ryantm/nixpkgs-update && cd nixpkgs-update
nix-build
```
2. Get a list of outdated packages and place them in a `packages-to-update.txt` file in the root directory of this repository.
2. Setup [hub](https://github.com/github/hub) and copy the oauth token to
`github_token.txt` in the root of this repository.
3. To test your config, try to update a single package:
```
git clone https://github.com/ryantm/repology-api.git && cd repology-api
nix run nixpkgs.cabal2nix -c cabal2nix --shell --hpack . > shell.nix && nix-build shell.nix && result/bin/repology-api > ../packages-to-update.txt
touch packages-to-upadte.txt
./result/bin/nixpkgs-update --dry-run --additionalUpdates "X oldVer newVer"`,
```
3. Return back `cd ..` and run the tool `nix run -c nixpkgs-update update`
where `X` is the attribute name, and `oldver` and `newVer` are the versions.
If this works, you are now setup to hack on `nixpkgs-update`! To send a batch of
updates, proceed as follows:
4. Get a list of outdated packages and place them in a `packages-to-update.txt` file:
```
./result/bin/nixpkgs-update fetch-repology > packages-to-update.txt
```
5. Run the tool in batch mode with `update-list`:
```
./result/bin/nixpkgs-update update-list --additionalUpdates ""
```
Note that the `--additionalUpdates` argument is currently mandatory, but does
not need to have a real value.
# Adding new dependencies / updating Cabal file