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1st chunk of `src/nix/profile-history.md`
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# Examples

* Show the changes between each version of your default profile:

  ```console
  # nix profile history
  Version 508 (2020-04-10):
    flake:nixpkgs#legacyPackages.x86_64-linux.awscli: ∅ -> 1.17.13

  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* `-> ∅`.

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Title: nix profile history: Displaying Profile Changes
Summary
The `nix profile history` command displays the changes between versions of a Nix profile. It shows which top-level packages were added, removed, or upgraded, indicating additions with `∅ -> version` and removals with `version -> ∅`. This command focuses on top-level packages only; use `nix profile diff-closures` for dependency changes.