* manual: Contributing -> Development, Hacking -> Building
what's currently called "hacking" are really instructions for setting up
a development environment and compiling from source. we have
a contribution guide in the repo (which rightly focuses on GitHub
workflows), and the material in the manual is more about working
on the code itself.
since we'd otherwise have three headings that amount to "Building Nix",
this change also moves the "classic Nix" instructions to the top.
we may want to reorganise this in the future, and bring
contributor-oriented information closer to the code, but for now let's
stick to more accurate names to ease navigation.
* fix NIX_PATH overriding
- test restricted evaluation
- test precedence for setting the search path
Co-authored-by: Robert Hensing <robert@roberthensing.nl>
Co-authored-by: John Ericson <git@JohnEricson.me>
This is in accordance with ARM's naming convention.
"Low" is confusing, because it could refer to either the cold end
of the stack as an abstract data type, or a low address.
These are different places, because the stack grows down through
the address space.
This avoids the double warning
warning: 'ping-store' is a deprecated alias for 'store ping'
warning: 'nix store ping' is a deprecated alias for 'nix store info'
* Only build perl subproject on Linux
* Fix various Windows regressions
* Don't put the emulator hook in test builds
We run the tests in a separate derivation. Only need it for the dev shell.
* Fix native dev shells
* Fix cross dev shells we don't know how to emulate
Co-authored-by: PoweredByPie <poweredbypie@users.noreply.github.com>
Co-authored-by: Joachim Schiele <js@lastlog.de>
Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
In _very_ rare cases (I had about 7 cases out of 32200 files!),
the order of how inherit-from bindings are printed when using
`nix-instantiate --parse` gets messed up.
The cause of this seems to be because the std::map the bindings are
placed in is keyed on a _pointer_, which then uses an
[implementation-defined strict total order](https://en.cppreference.com/w/cpp/language/operator_comparison#Pointer_total_order).
The fix here is to key the bindings on their displacement instead,
which maintains the same order as they appear in the file.
Unfortunately I wasn't able to make a reproducible test for this in the
source, there's something about the local environment that makes it
unreproducible for me.
However I was able to make a reproducible test in a Nix build on a Nix
version from a very recent master:
nix build github:infinisil/non-det-nix-parsing-repro
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
Following what is outlined in #10766 refactor the uds-remote-store such
that the member variables (state) don't live in the store itself but in
the config object.
Additionally, the config object includes a new necessary constructor
that takes a scheme & authority.
Tests are commented out because of linking errors with the current config system.
When there is a new config system we can reenable them.
Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
This was accidentally introduced
in f71b4da0b3. We didn't notice this
because the version got interpreted by the daemon as the obsolete "CPU
affinity will follow" field, and being non-zero, it would then read
another integer for the ignored CPU affinity.
The default value for the setting was evaluated by
calling a method on the object _being currently constructed_,
so we were using it before all fields were initialized.
This has been fixed by making the called method static,
and not using the previously used fields at all.
But functionality hasn't changed!
The fields were usually always zero (by chance?) anyway,
meaning the conditional path was always taken.
Thus the current logic has been kept, the code simplified,
and UB removed.
This was found with the helper of UBSan.
