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Prevent some `nix flake` commands to crash by trying to parse a
placeholder output as a store path
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Prevents a crash because most `nix` subcommands assumed that derivations
know their output path, which isn't the case for CA derivations
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Allow nix.conf options to be set in flake.nix
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Add --json option to nix build to allow machine readable output on
stdout with all built derivations
Fixes #1930
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This makes it possible to have per-project configuration in flake.nix,
e.g. binary caches and other stuff:
nixConfig.bash-prompt-suffix = "[1;35mngi# [0m";
nixConfig.substituters = [ "https://cache.ngi0.nixos.org/" ];
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Make nix output completions in the form `completion\tdescription`.
This can't be used by bash (afaik), but other shells like zsh or fish
can display it along the completion choices
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Offer a safer interface for path and pathOpt
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new-interface-for-path-pathOpt
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Occasionally, `nix-build --check` is fairly helpful and I'd like to be
able to use this feature for flakes that need to be built with `nix
build` as well.
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new-interface-for-path-pathOpt
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I think this better captures the intent of what's going on: we either
have an opaque store path, or a drv path with some outputs.
Having this structure will also help us support CA derivations: we'll
have to allow the outpath paths to be optional, so the structure we gain
now makes up for the structure we loose then.
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optional-derivation-output-storepath
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For instance, 'nix why-depends --use-derivation nixpkgs#hello
nixpkgs#glibc' shows why hello's .drv depends on glibc's .drv.
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That is, the commands 'nix path-info nixpkgs#hello' and 'nix path-info
/nix/store/00ls0qi49qkqpqblmvz5s1ajl3gc63lr-hello-2.10.drv' now do the
same thing (i.e. build the derivation and operate on the output store
path, rather than the .drv path).
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This allows you to refer to an input from another flake. For example,
$ nix run --inputs-from /path/to/hydra nixpkgs#hello
runs 'hello' from the 'nixpkgs' inputs of the 'hydra' flake.
Fixes #3769.
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E.g.
$ nix run nixpkgs#hello
error: --- Error ---------- nix
flake 'flake:nixpkgs' does not provide attribute 'apps.x86_64-linux.hello' or 'hello'
instead of
$ nix run nixpkgs#hello
error: --- Error ---------- nix
flake 'flake:nixpkgs' does not provide attribute 'hello'
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This fixes an issue where lockfile generation was not idempotent:
after updating a lockfile, a "follows" node would end up pointing to a
new copy of the node, rather than to the original node.
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The initial contents of the flake is specified by the
'templates.<name>' or 'defaultTemplate' output of another flake. E.g.
outputs = { self }: {
templates = {
nixos-container = {
path = ./nixos-container;
description = "An example of a NixOS container";
};
};
};
allows
$ nix flake init -t templates#nixos-container
Also add a command 'nix flake new', which is identical to 'nix flake
init' except that it initializes a specified directory rather than the
current directory.
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Fixes
$ nix build nixpkgs#zoom-us
error: Package ‘zoom-us-5.0.399860.0429’ in /nix/store/m79v7h75b69fkk8d2qcwm555l3wq6fmv-source/pkgs/applications/networking/instant-messengers/zoom-us/default.nix:126 has an unfree license (‘unfree’), refusing to evaluate.
$ nix build nixpkgs#zoom-us --impure
error: cached failure of attribute 'legacyPackages.x86_64-linux.zoom-us.drvPath'
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The attributes previously stored in TreeInfo (narHash, revCount,
lastModified) are now stored in Input. This makes it less arbitrary
what attributes are stored where.
As a result, the lock file format has changed. An entry like
"info": {
"lastModified": 1585405475,
"narHash": "sha256-bESW0n4KgPmZ0luxvwJ+UyATrC6iIltVCsGdLiphVeE="
},
"locked": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "b88ff468e9850410070d4e0ccd68c7011f15b2be",
"type": "github"
},
is now stored as
"locked": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "b88ff468e9850410070d4e0ccd68c7011f15b2be",
"type": "github",
"lastModified": 1585405475,
"narHash": "sha256-bESW0n4KgPmZ0luxvwJ+UyATrC6iIltVCsGdLiphVeE="
},
The 'Input' class is now a dumb set of attributes. All the fetcher
implementations subclass InputScheme, not Input. This simplifies the
API.
Also, fix substitution of flake inputs. This was broken since lazy
flake fetching started using fetchTree internally.
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Generic shell completion support for the 'nix' command
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This completes flakerefs using the registry (e.g. 'nix<TAB>' => 'nix
nixpkgs') and flake output attributes by evaluating the flake
(e.g. 'dwarffs#nix<TAB>' => 'dwarffs#nixosModules').
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