Regex syntax is awful.

Fixes #4739
Fixes #3553 in spirit IMO

Prior to this change, Nix would prepend every installable to the PATH
list in order to ensure th...

`nix profile`: Allow referring to elements by human-readable name

As decided during [the last team meeting](https://discourse.nixos.org/t/2023-12-18-nix-team-meet...

Undeprecate isNull

There's no good reason to deprecate it:
- For consistency reasons it should continue to exist, s...

Fix warnings when running checks

Document more `Makefile` variables

Move down fallback targets in `Makefile`

This ensures `lib.mk` still defines `default` as the first target. This
fixes some builds.

as written the comparisons generate copies, even though it looks as
though they shouldn't.

befo...

string_view()ification calls strlen() first, which we don't need here.

checking for isBlackhole in the forceValue hot path is rather more
expensive than necessary, and...

resizing a std::string clears the newly added bytes, which is not
necessary here and comes with ...

it's relatively small and fits on the stack nicely, and we don't need it
initialized either.

forceValue is extremely hot. interestingly adding likeliness annotations
to the branches does no...

this also reduces forceValue code size and removes the need for
hideInDiagnostics. coopting thun...

almost all uses of this are interactive, except for deepSeq. deepSeq is
going to be expensive an...

~2% speedup on parsing without eval, less (but still significant) on
system eval. having flex ge...

~1% parser speedup from not using TLS indirections, less on system eval.
this could have also go...

Content addressing and adding to store cleanup

package: don't set sysconfdir in devShells

Fix `logging.sh` test on macOS

build(deps): bump zeebe-io/backport-action from 2.2.0 to 2.3.0

installer: allow overriding of NIX_FIRST_BUILD_ID on darwin

Allow access to /dev/stderr in Darwin sandbox

We allow /dev/stdout, so why not this? Since it is process-local,
anyway, should not be possible...

because there are often already users in the 300 range and it's painful
to work around.

revives...

Bumps [zeebe-io/backport-action](https://github.com/zeebe-io/backport-action) from 2.2.0 to 2.3....

On macOS in the `nix develop` shell, `make
tests/functional/logging.sh.test` errors:

++(log...

As part of the CLI stabilization effort, the last remaining checkbox (at
the moment) for `nix da...

`nix flake check` had these warnings:

trace: warning: Module argument `nodes.client.config`...

Split `--disable-tests`, fix cross builds

It might seem obnoxious to have yet more configure flags, but I found
controlling both the unit ...

* docs: add link to project board to PRs

* Update .github/PULL_REQUEST_TEMPLATE.md

Co-auth...

`addTextToStore` and `computeStorePathFromDump` are now redundant.

Co-authored-by: Robert Hensi...

Co-authored-by: Robert Hensing <[email protected]>

add cross-reference

Remove some blank lines from stack traces

This keeps hint messages, source location information, and source code
snippets grouped together...

Fix clang devshell

chore(deps): bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](htt...

Add eval-system option

These were under-tested. This tests the status quo and especially
previous commit of this PR bet...

`eval-system` option overrides just the value of `builtins.currentSystem`.
This is more useful t...

Issue introduced in https://github.com/NixOS/nix/pull/9535

Fix `sys/xattr.h` check

I wrote the `configure.ac` wrong, and so we just got no builds
supporting ACLs.

Also, it needs ...

Remove custom lowdown

Use `--with-boost` on macOS to fix local builds

`configureFlags` only included `--with-boost` on Linux, which makes
local builds as outlined in ...

By doing so, they get reported when building through the daemon via either `unix://` or `ssh-ng:...

This was last upgraded in 788008385ef5bf7edb799977525d6f73f02c76bc, but
the version in Nixpkgs i...

Simplify flake.nix by creating generic callPackage-able package.nix

Using `+` is Nixpkgs standard ideom for this, and helps avoid needless
rebuilds somewhat.

Test `nix copy --substitute-on-destination`

It works with both `ssh://` and `ssh-ng://` now since #9600 (and
`ssh-ng:// didn't work before t...

`allowed-uris`: match whole schemes without slashes

fix: nix copy ssh-ng:// not respecting --substitute-on-destination

Improve the unsafeGetAttrPos test

We can use corepkgsFS->addFile() now to create a "real" position.