Name

       nix  store  diff-closures - show what packages and versions were added and removed between
       two closures

Synopsis

       nix store diff-closures [option…] before after

Examples

       • Show what got added and removed between two versions of the NixOS system profile:

       # nix store diff-closures /nix/var/nix/profiles/system-655-link /nix/var/nix/profiles/system-658-link
       acpi-call: 2020-04-07-5.8.16 → 2020-04-07-5.8.18
       baloo-widgets: 20.08.1 → 20.08.2
       bluez-qt: +12.6 KiB
       dolphin: 20.08.1 → 20.08.2, +13.9 KiB
       kdeconnect: 20.08.2 → ∅, -6597.8 KiB
       kdeconnect-kde: ∅ → 20.08.2, +6599.7 KiB
       …

Description

       This command shows the differences between the two closures before and after with  respect
       to  the addition, removal, or version change of packages, as well as changes in store path
       sizes.

       For each package name in the two closures (where a package name is  defined  as  the  name
       component  of  a  store  path  excluding  the version), if there is a change in the set of
       versions of the package, or a change in the size of the store paths of more than 8 KiB, it
       prints a line like this:

       dolphin: 20.08.1 → 20.08.2, +13.9 KiB

       No  size  change  is  shown  if it’s below the threshold. If the package does not exist in
       either the before or after closures,  it  is  represented  using  ∅  (empty  set)  on  the
       appropriate  side  of  the arrow. If a package has an empty version string, the version is
       rendered as ε (epsilon).

       There may be multiple versions of a package in  each  closure.  In  that  case,  only  the
       changed versions are shown. Thus,

       libfoo: 1.2, 1.3 → 1.4

       leaves  open  the  possibility that there are other versions (e.g. 1.1) that exist in both
       closures.

Options

       Common evaluation options:

       • --arg name expr
         Pass the value expr as the argument name to Nix functions.

       • --argstr name string
         Pass the string string as the argument name to Nix functions.

       • --eval-store store-url
         The Nix store to use for evaluations.

       • --impure
         Allow access to mutable paths and repositories.

       • --include / -I path
         Add path to the list of locations used to look up <...> file names.

       • --override-flake original-ref resolved-ref
         Override the flake registries, redirecting original-ref to resolved-ref.

       Common flake-related options:

       • --commit-lock-file
         Commit changes to the flake’s lock file.

       • --inputs-from flake-url
         Use the inputs of the specified flake as registry entries.

       • --no-registries
         Don’t allow lookups in the flake registries. This option is  deprecated;  use  --no-use-
         registries.

       • --no-update-lock-file
         Do not allow any updates to the flake’s lock file.

       • --no-write-lock-file
         Do not write the flake’s newly generated lock file.

       • --override-input input-path flake-url
         Override  a  specific  flake input (e.g. dwarffs/nixpkgs). This implies --no-write-lock-
         file.

       • --recreate-lock-file
         Recreate the flake’s lock file from scratch.

       • --update-input input-path
         Update a specific flake input (ignoring its previous entry in the lock file).

       Options that change the interpretation of installables:

       • --derivation
         Operate on the store derivation rather than its outputs.

       • --expr expr
         Interpret installables as attribute paths relative to the Nix expression expr.

       • --file / -f file
         Interpret installables as attribute paths relative to the Nix expression stored in file.

                                                                      nix3-store-diff-closures(1)