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The implementation of "partition" in Nixpkgs is O(n^2) (because of the
use of ++), and for some reason was causing stack overflows in
multi-threaded evaluation (not sure why).
This reduces "nix-env -qa --drv-path" runtime by 0.197s and memory
usage by 298 MiB (in non-Boehm mode).
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Also, factor out JSON generation from value-to-json.{cc,hh}, and
support producing indented JSON.
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Normally it's impossible to take a reference to the function passed to
callFunction, so some callers (e.g. ExprApp::eval) allocate that value
on the stack. For functors, a reference to the functor itself may be
kept, so we need to have it on the heap.
Fixes #1045
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That is, unless --file is specified, the Nix search path is
synthesized into an attribute set. Thus you can say
$ nix build nixpkgs.hello
assuming $NIX_PATH contains an entry of the form "nixpkgs=...". This
is more verbose than
$ nix build hello
but is less ambiguous.
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For example, you can now say:
configureFlags = "--prefix=${placeholder "out"} --includedir=${placeholder "dev"}";
The strings returned by the ‘placeholder’ builtin are replaced at
build time by the actual store paths corresponding to the specified
outputs.
Previously, you had to work around the inability to self-reference by doing stuff like:
preConfigure = ''
configureFlags+=" --prefix $out --includedir=$dev"
'';
or rely on ad-hoc variable interpolation semantics in Autoconf or Make
(e.g. --prefix=\$(out)), which doesn't always work.
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Allow contexted strings in replaceStrings
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Also, allow builtins.{fetchurl,fetchTarball} in restricted mode if a
hash is specified.
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E.g.
$ nix-build -I nixpkgs=git://github.com/NixOS/nixpkgs '<nixpkgs>' -A hello
This is not extremely useful yet because you can't specify a
branch/revision.
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The function builtins.fetchgit fetches Git repositories at evaluation
time, similar to builtins.fetchTarball. (Perhaps the name should be
changed, being confusing with respect to Nixpkgs's fetchgit function,
with works at build time.)
Example:
(import (builtins.fetchgit git://github.com/NixOS/nixpkgs) {}).hello
or
(import (builtins.fetchgit {
url = git://github.com/NixOS/nixpkgs-channels;
rev = "nixos-16.03";
}) {}).hello
Note that the result does not contain a .git directory.
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This also gets rid of --log-type, since the nested log type isn't
useful in a multi-threaded situation, and nobody cares about the
"pretty" log type.
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nix-env: respect meta.outputsToInstall
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Thus, -I / $NIX_PATH entries are now downloaded only when they are
needed for evaluation. An error to download an entry is a non-fatal
warning (just like non-existant paths).
This does change the semantics of builtins.nixPath, which now returns
the original, rather than resulting path. E.g., before we had
[ { path = "/nix/store/hgm3yxf1lrrwa3z14zpqaj5p9vs0qklk-nixexprs.tar.xz"; prefix = "nixpkgs"; } ... ]
but now
[ { path = "https://nixos.org/channels/nixos-16.03/nixexprs.tar.xz"; prefix = "nixpkgs"; } ... ]
Fixes #792.
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This way we don't have to put all primops in one giant file.
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Allowing stuff like
NIX_REMOTE=https://cache.nixos.org nix-store -qR /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1
or
NIX_REMOTE=https://cache.nixos.org nix-store --export /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1 | nix-store --import
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`nix-repl` will use this for deciding whether to keep waiting for input or
error out right away.
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Discussed on https://github.com/NixOS/nixpkgs/pull/12653#discussion_r51601849
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The call to tmp_number.append had its arguments mixed up. Also, JSON
does not allow a trailing "," after array/object members.
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Implement floats
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Calling a class an API is a bit redundant...
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Also, move a few free-standing functions into StoreAPI and Derivation.
Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
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'start-condition stack underflow'. This fixes #751"""
This reverts commit b669d3d2e83d3c50238751b57cff3ed0ca39bc8a.
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'start-condition stack underflow'. This fixes #751""
This reverts commit ed23c8568e10d15196bb4ff2b79fc14191d28109. Let's
merge this *after* the 1.11.1 release.
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stack underflow'. This fixes #751"
This reverts commit 8120b6fb8a4924f8ae717bba9bbda4a2f89e2141 and fixes the regression introduced in
8d22b26448a091c76ab972c0b0603daac5e255e4.
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underflow'. This fixes #751"
This reverts commit 8d22b26448a091c76ab972c0b0603daac5e255e4. It
breaks Nixpkgs:
$ nix-env -qa
error: syntax error, unexpected IND_STR, expecting '}', at /home/eelco/Dev/nixpkgs-stable/pkgs/top-level/python-packages.nix:7605:8
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This fixes #751
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Also show types when nix cannot compare values of different types.
This is also more consistent since types are already shown when comparing values of the same not comparable type.
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For example, "${{ foo = "bar"; __toString = x: x.foo; }}" evaluates
to "bar".
With this, we can delay calling functions like mkDerivation,
buildPythonPackage, etc. until we actually need a derivation, enabling
overrides and other modifications to happen by simple attribute set
update.
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The text is just a conversion of comment from src/libexpr/primops.cc
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The last one I tried was botchered anyway ...
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We should probably disallow these, but until then, we shouldn't barf
with an assertion failure.
Fixes #738.
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autoCallFunction now auto-calls functors
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FreeBSD support with knowledge about Linux emulation
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There is no libdl on FreeBSD. Instead the symbols are included in libc.
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