2020-12-18 15:25:36 +02:00
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R""(
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# Examples
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* Upgrade all packages that were installed using a mutable flake
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reference:
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```console
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# nix profile upgrade '.*'
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```
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* Upgrade a specific package:
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```console
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# nix profile upgrade packages.x86_64-linux.hello
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```
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* Upgrade a specific profile element by number:
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```console
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2021-05-24 13:35:39 +03:00
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# nix profile list
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2020-12-18 15:25:36 +02:00
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0 flake:nixpkgs#legacyPackages.x86_64-linux.spotify …
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# nix profile upgrade 0
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```
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# Description
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This command upgrades a previously installed package in a Nix profile,
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by fetching and evaluating the latest version of the flake from which
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the package was installed.
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> **Warning**
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>
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> This only works if you used a *mutable* flake reference at
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> installation time, e.g. `nixpkgs#hello`. It does not work if you
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> used an *immutable* flake reference
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> (e.g. `github:NixOS/nixpkgs/13d0c311e3ae923a00f734b43fd1d35b47d8943a#hello`),
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> since in that case the "latest version" is always the same.
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)""
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