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Author SHA1 Message Date
Graham Christensen
9535f8bdc3 Apply clang-format universally.
* It is tough to contribute to a project that doesn't use a formatter,
* It is extra hard to contribute to a project which has configured the formatter, but ignores it for some files
* Code formatting makes it harder to hide obscure / weird bugs by accident or on purpose,

Let's rip the bandaid off?

Note that PRs currently in flight should be able to be merged relatively easily by applying `clang-format` to their tip prior to merge.
2025-05-22 15:24:50 -04:00
John Ericson
cc24766fa6 Expose the nix component in header include paths
For example, instead of doing

    #include "nix/store-config.hh"
    #include "nix/derived-path.hh"

Now do

    #include "nix/store/config.hh"
    #include "nix/store/derived-path.hh"

This was originally planned in the issue, and also recent requested by
Eelco.

Most of the change is purely mechanical. There is just one small
additional issue. See how, in the example above, we took this
opportunity to also turn `<comp>-config.hh` into `<comp>/config.hh`.
Well, there was already a `nix/util/config.{cc,hh}`. Even though there
is not a public configuration header for libutil (which also would be
called `nix/util/config.{cc,hh}`) that's still confusing, To avoid any
such confusion, we renamed that to `nix/util/configuration.{cc,hh}`.

Finally, note that the libflake headers already did this, so we didn't
need to do anything to them. We wouldn't want to mistakenly get
`nix/flake/flake/flake.hh`!

Progress on #7876
2025-04-01 11:40:42 -04:00
John Ericson
f3e1c47f47 Separate headers from source files
The short answer for why we need to do this is so we can consistently do
`#include "nix/..."`. Without this change, there are ways to still make
that work, but they are hacky, and they have downsides such as making it
harder to make sure headers from the wrong Nix library (e..g.
`libnixexpr` headers in `libnixutil`) aren't being used.

The C API alraedy used `nix_api_*`, so its headers are *not* put in
subdirectories accordingly.

Progress on #7876

We resisted doing this for a while because it would be annoying to not
have the header source file pairs close by / easy to change file
path/name from one to the other. But I am ameliorating that with
symlinks in the next commit.
2025-03-31 12:20:25 -04:00
John Ericson
e80d333777
Document Store Derivations and Deriving Paths (#12290)
This is a big step documenting the store layer on its own, separately from the evaluator (and `builtins.derivation`).

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2025-02-10 01:30:07 +00:00
silvanshade
1f56ea4c72
Add BLAKE3 hashing algorithm
This uses the single-threaded C-based routines from libblake3.

This is not optimal performance-wise but should be a good starting point
for nix compatibility with BLAKE3 hashing until a more performant
implementation based on the multi-threaded BLAKE3 routines
(written in Rust) can be developed.
2025-02-05 17:49:15 -07:00
John Ericson
1c75af969a Document store object content addressing & improve JSON format
The JSON format no longer uses the legacy ATerm `r:` prefixing nonsese,
but separate fields.

Progress on #9866

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2024-05-20 09:34:35 -04:00
John Ericson
043135a848 Document file system object content addressing
In addition:

- Take the opportunity to add a bunch more missing hyperlinks, too.

- Remove some glossary entries that are now subsumed by dedicated pages.
  We used to not be able to do this without breaking link fragments, but
  now we can, so pick up where we left off.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2024-05-15 16:28:48 -04:00
John Ericson
efd36b49e8 nix hash path, and preperatory refactors
- `nix store add` supports text hashing

  With functional test ensuring it matches `builtins.toFile`.

- Factored-out flags for both commands

- Move all common reusable flags to `libcmd`

  - They are not part of the *definition* of the CLI infra, just a usag
    of it.

  - The `libstore` flag couldn't go in `args.hh` in libutil anyways,
    would be awkward for it to live alone

- Shuffle around `Cmd*` hierarchy so flags for deprecated commands don't
  end up on the new ones
2024-02-21 12:11:25 -05:00