forked from lix-project/lix
95 lines
2.7 KiB
Markdown
95 lines
2.7 KiB
Markdown
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R""(
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# Examples
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* Print the store path produced by `nixpkgs#hello`:
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```console
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# nix path-info nixpkgs#hello
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/nix/store/v5sv61sszx301i0x6xysaqzla09nksnd-hello-2.10
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```
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* Show the closure sizes of every path in the current NixOS system
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closure, sorted by size:
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```console
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# nix path-info -rS /run/current-system | sort -nk2
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/nix/store/hl5xwp9kdrd1zkm0idm3kkby9q66z404-empty 96
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/nix/store/27324qvqhnxj3rncazmxc4mwy79kz8ha-nameservers 112
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…
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/nix/store/539jkw9a8dyry7clcv60gk6na816j7y8-etc 5783255504
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/nix/store/zqamz3cz4dbzfihki2mk7a63mbkxz9xq-nixos-system-machine-20.09.20201112.3090c65 5887562256
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```
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* Show a package's closure size and all its dependencies with human
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readable sizes:
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```console
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# nix path-info -rsSh nixpkgs#rustc
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/nix/store/01rrgsg5zk3cds0xgdsq40zpk6g51dz9-ncurses-6.2-dev 386.7K 69.1M
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/nix/store/0q783wnvixpqz6dxjp16nw296avgczam-libpfm-4.11.0 5.9M 37.4M
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…
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```
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* Check the existence of a path in a binary cache:
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```console
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# nix path-info -r /nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1 --store https://cache.nixos.org/
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path '/nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1' is not valid
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```
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* Print the 10 most recently added paths (using --json and the jq(1)
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command):
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```console
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# nix path-info --json --all | jq -r 'sort_by(.registrationTime)[-11:-1][].path'
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```
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* Show the size of the entire Nix store:
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```console
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# nix path-info --json --all | jq 'map(.narSize) | add'
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49812020936
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```
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* Show every path whose closure is bigger than 1 GB, sorted by closure
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size:
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```console
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# nix path-info --json --all -S \
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| jq 'map(select(.closureSize > 1e9)) | sort_by(.closureSize) | map([.path, .closureSize])'
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[
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…,
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[
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"/nix/store/zqamz3cz4dbzfihki2mk7a63mbkxz9xq-nixos-system-machine-20.09.20201112.3090c65",
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5887562256
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]
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]
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```
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* Print the path of the store derivation produced by `nixpkgs#hello`:
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```console
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# nix path-info --derivation nixpkgs#hello
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/nix/store/s6rn4jz1sin56rf4qj5b5v8jxjm32hlk-hello-2.10.drv
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```
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# Description
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This command shows information about the store paths produced by
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*installables*, or about all paths in the store if you pass `--all`.
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By default, this command only prints the store paths. You can get
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additional information by passing flags such as `--closure-size`,
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--size`, `--sigs` or `--json`.
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> **Warning**
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>
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> Note that `nix path-info` does not build or substitute the
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> *installables* you specify. Thus, if the corresponding store paths
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> don't already exist, this command will fail. You can use `nix build`
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> to ensure that they exist.
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)""
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