lix/src/nix/profile-history.md

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R""(
# Examples
* Show the changes between each version of your default profile:
```console
# nix profile history
2021-09-14 18:47:33 +00:00
Version 508 (2020-04-10):
flake:nixpkgs#legacyPackages.x86_64-linux.awscli: ∅ -> 1.17.13
2021-09-14 18:47:33 +00:00
Version 509 (2020-05-16) <- 508:
flake:nixpkgs#legacyPackages.x86_64-linux.awscli: 1.17.13 -> 1.18.211
```
# Description
This command shows what packages were added, removed or upgraded
between subsequent versions of a profile. It only shows top-level
packages, not dependencies; for that, use [`nix profile
diff-closures`](./nix3-profile-diff-closures.md).
The addition of a package to a profile is denoted by the string `∅ ->`
*version*, whereas the removal is denoted by *version* `-> ∅`.
)""