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doc: De-emphasize nix-env without -A

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The manual uses `nix-env -i` without `-A` prominently, teaching a bad practice to newcomers.
This commit is contained in:
Jan Tojnar 2021-11-17 16:30:39 +01:00
parent 480c883f36
commit ca4d8ce9e2
9 changed files with 80 additions and 61 deletions
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4
doc/manual/src/introduction.md
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@ -76,7 +76,7 @@ there after an upgrade. This means that you can _roll back_ to the
old version:
```console
$ nix-env --upgrade some-packages
$ nix-env --upgrade -A nixpkgs.some-package
$ nix-env --rollback
```
@ -122,7 +122,7 @@ Nix expressions generally describe how to build a package from
source, so an installation action like
```console
$ nix-env --install firefox
$ nix-env --install -A nixpkgs.firefox
```
_could_ cause quite a bit of build activity, as not only Firefox but