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52 lines
1.6 KiB
Markdown
52 lines
1.6 KiB
Markdown
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R""(
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# Examples
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* Show what got added and removed between two versions of the NixOS
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system profile:
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```console
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# nix store diff-closures /nix/var/nix/profiles/system-655-link /nix/var/nix/profiles/system-658-link
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acpi-call: 2020-04-07-5.8.16 → 2020-04-07-5.8.18
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baloo-widgets: 20.08.1 → 20.08.2
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bluez-qt: +12.6 KiB
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dolphin: 20.08.1 → 20.08.2, +13.9 KiB
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kdeconnect: 20.08.2 → ∅, -6597.8 KiB
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kdeconnect-kde: ∅ → 20.08.2, +6599.7 KiB
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…
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```
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# Description
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This command shows the differences between the two closures *before*
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and *after* with respect to the addition, removal, or version change
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of packages, as well as changes in store path sizes.
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For each package name in the two closures (where a package name is
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defined as the name component of a store path excluding the version),
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if there is a change in the set of versions of the package, or a
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change in the size of the store paths of more than 8 KiB, it prints a
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line like this:
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```console
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dolphin: 20.08.1 → 20.08.2, +13.9 KiB
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```
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No size change is shown if it's below the threshold. If the package
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does not exist in either the *before* or *after* closures, it is
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represented using `∅` (empty set) on the appropriate side of the
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arrow. If a package has an empty version string, the version is
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rendered as `ε` (epsilon).
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There may be multiple versions of a package in each closure. In that
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case, only the changed versions are shown. Thus,
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```console
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libfoo: 1.2, 1.3 → 1.4
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```
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leaves open the possibility that there are other versions (e.g. `1.1`)
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that exist in both closures.
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)""
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