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NIX_USER_CONF_FILES
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Motivation: maintain project-level configuration files.
Document the whole situation a bit better so that it corresponds to the
implementation, and add NIX_USER_CONF_FILES that allows overriding
which user files Nix will load during startup.
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This doesn't just cause problems for nix-store --serve but also results
in certain build failures. Builds that use unix domain sockets in their
tests often fail because the /var/folders prefix already consumes more
than half of the maximum length of socket paths.
struct sockaddr_un {
sa_family_t sun_family; /* AF_UNIX */
char sun_path[108]; /* Pathname */
};
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(cherry picked from commit 2c692a3b144523bca68dd6de618124ba6c9bb332)
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Most functions now take a StorePath argument rather than a Path (which
is just an alias for std::string). The StorePath constructor ensures
that the path is syntactically correct (i.e. it looks like
<store-dir>/<base32-hash>-<name>). Similarly, functions like
buildPaths() now take a StorePathWithOutputs, rather than abusing Path
by adding a '!<outputs>' suffix.
Note that the StorePath type is implemented in Rust. This involves
some hackery to allow Rust values to be used directly in C++, via a
helper type whose destructor calls the Rust type's drop()
function. The main issue is the dynamic nature of C++ move semantics:
after we have moved a Rust value, we should not call the drop function
on the original value. So when we move a value, we set the original
value to bitwise zero, and the destructor only calls drop() if the
value is not bitwise zero. This should be sufficient for most types.
Also lots of minor cleanups to the C++ API to make it more modern
(e.g. using std::optional and std::string_view in some places).
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https://hydra.nixos.org/build/107457009
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Handle SIGWINCH in main thread
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(cherry picked from commit 04a59769963fe2a28d10ba15de743fe499333c80)
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This flag
* Disables substituters.
* Sets the tarball-ttl to infinity (ensuring e.g. that the flake
registry and any downloaded flakes are considered current).
* Disables retrying downloads and sets the connection timeout to the
minimum. (So it doesn't completely disable downloads at the moment.)
(cherry picked from commit 8ea842260b4fd93315d35c5ba94b1ff99ab391d8)
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This is not needed on linux at all! Tried to explain as much as I
understand with the problem.
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For the SIGWINCH signal to be caught, it needs to be set in sigaction
on the main thread. Previously, this was broken, and updateWindowSize
was never being called. Tested on macOS 10.14.
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Allow global config settings to be defined in multiple Config
classes. For example, this means that libutil can have settings and
evaluator settings can be moved out of libstore. The Config classes
are registered in a new GlobalConfig class to which config files
etc. are applied.
Relevant to https://github.com/NixOS/nix/issues/2009 in that it
removes the need for ad hoc handling of useCaseHack, which was the
underlying cause of that issue.
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From exec(3):
> The list of arguments must be terminated by a null pointer, and, since these
> are variadic functions, this pointer must be cast (char *) NULL
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Previously, this would fail at startup for non-NixOS installs:
nix-env --help
The fix for this is to just use "nixManDir" as the value for MANPATH
when spawning "man".
To test this, I’m using the following:
$ nix-build release.nix -A build
$ MANPATH= ./result/bin/nix-env --help
Fixes #1627
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All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
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https://hydra.nixos.org/build/68827814
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Also, random cleanup to argument handling.
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This is superfluous since you can now just set "builders" to empty,
e.g. "--builders ''".
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Build fails as:
$ make
CXX src/libmain/stack.o
src/libmain/stack.cc: In function 'void nix::sigsegvHandler(int, siginfo_t*, void*)':
src/libmain/stack.cc:21:21: error: 'ucontext' was not declared in this scope
sp = (char *) ((ucontext *) ctx)->uc_mcontext.gregs[REG_RSP];
^~~~~~~~
src/libmain/stack.cc:21:21: note: suggested alternative: 'ucontext_t'
sp = (char *) ((ucontext *) ctx)->uc_mcontext.gregs[REG_RSP];
^~~~~~~~
ucontext_t
It's caused by upstream rename:
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=251287734e89a52da3db682a8241eb6bccc050c9
which basically changes
typedef struct ucontext {} ucontext_t;
to
typedef struct ucontext_t {} ucontext_t;
The change uses ucontext_t.
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
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In particular, drop the "build-" and "gc-" prefixes which are
pointless. So now you can say
nix build --no-sandbox
instead of
nix build --no-build-use-sandbox
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Relevant RFC: NixOS/rfcs#4
$ ag -l | xargs sed -i -e "/\"/s/’/'/g;/\"/s/‘/'/g"
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Note that this removes the need for a derivation symlink, so the
--drv-path and --add-drv-link flags now do nothing.
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This broke "nix-store --serve".
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this fixes a linker failure on cygwin 64 due to some bad
interaction between tls and shared libraries.
see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64697
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This makes all config options self-documenting.
Unknown or unparseable config settings and --option flags now cause a
warning.
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They convey no useful information.
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"build-max-jobs" and the "-j" option can now be set to "auto" to use
the number of CPUs in the system. (Unlike build-cores, it doesn't use
0 to imply auto-configuration, because a) magic values are a bad idea
in general; b) 0 is a legitimate value used to disable local
building.)
Fixes #1198.
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Also get rid of Settings::processEnvironment(), it appears to be
useless.
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