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Put all Nix configuration flags in a Settings object.
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querySubstitutablePaths() takes a set of paths, so this greatly
reduces daemon <-> client latency.
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queryValidPaths() combines multiple calls to isValidPath() in one.
This matters when using the Nix daemon because it reduces latency.
For instance, on "nix-env -qas \*" it reduces execution time from 5.7s
to 4.7s (which is indistinguishable from the non-daemon case).
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I.e. when multiple non-derivation arguments are passed to ‘nix-store
-r’ to be substituted, do them in parallel.
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and nix-env, e.g.,
$ nix-env -f '<nixpkgs>' -i patchelf
or
$ nix-build '<nixos/tests>' -A login.test
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This should also fix:
nix-instantiate: ./../boost/shared_ptr.hpp:254: T* boost::shared_ptr<T>::operator->() const [with T = nix::StoreAPI]: Assertion `px != 0' failed.
which was caused by hashDerivationModulo() calling the ‘store’
object (during store upgrades) before openStore() assigned it.
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brackets, e.g.
import <nixpkgs/pkgs/lib>
are resolved by looking them up relative to the elements listed in
the search path. This allows us to get rid of hacks like
import "${builtins.getEnv "NIXPKGS_ALL"}/pkgs/lib"
The search path can be specified through the ‘-I’ command-line flag
and through the colon-separated ‘NIX_PATH’ environment variable,
e.g.,
$ nix-build -I /etc/nixos ...
If a file is not found in the search path, an error message is
lazily thrown.
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the EvalState class.
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checked too soon whether substitutes are available. That is, it did
so for every available package, rather than those matching installed
packages. This was very slow and subject to assertion failures. So
do the check much later. Idem for `nix-env -qab' and `nix-env -ib'.
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* Simplify the representation of attributes in the AST.
* Change the behaviour of listToAttrs() in case of duplicate names.
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a pointer to a Value, rather than the Value directly. This improves
the effectiveness of garbage collection a lot: if the Value is
stored inside the set directly, then any live pointer to the Value
causes all other attributes in the set to be live as well.
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instance) "nix-env -i wine" works on x86_64-linux, even though Wine
is built on i686-linux. In the event that there are multiple
matching derivations, prefer those built for the current system.
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errors with position info.
* For all positions, use the position of the first character of the
first token, rather than the last character of the first token plus
one.
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$out/manifest.nix rather than as an ATerm.
(Hm, I thought I committed this two days ago...)
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with someVar; ...'), the contents of the variable would be
clobbered. (The attributes in the outer `with' were added to the
variable.)
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finished yet.
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--enable-shared.
* In libutil/libstore/libexpr etc., link against sqlite and aterm.
* Some more header file hygiene.
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trying to upgrade a package.
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useful for fields like meta.maintainers, meta.priority (which can be
a proper integer now) and even meta.license (if there are multiple
licenses).
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attributes from the meta attribute. Not doing so caused nix-env to
barf on the "psi" package, which has a meta.function attribute,
the textual serialisation of which causes a gigantic string to be
produced --- so big that it causes nix-env to run out of memory.
Note however that "meta" really only should contain strings.
meta.function should be passthru.function.
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~/.nix-defexpr, otherwise the attribute cannot be selected with the
`-A' option. Useful if you want to stick a Nix expression directly
in ~/.nix-defexpr.
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`-u'. Instead of acquiring an exclusive lock on the profile for the
entire duration of the operation, we just perform the operation
optimistically (without an exclusive lock), and check at the end
whether the profile changed while we were busy (i.e., the symlink
target changed). If so, the operation is restarted. Restarting is
generally cheap, since the build results are still in the Nix store.
Most of the time, only the user environment has to be rebuilt.
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just like nix-env.
* `nix-store --realise': --dry-run option.
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--dry-run). Maybe there should be an option to turn this on/off?
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downloads.
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* --dry-run: print the paths that we don't know how to build/substitute.
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https://svn.nixos.org/repos/nix/nix/branches/no-bdb).
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$ nix-env -e $(which firefox)
or
$ nix-env -e /nix/store/nywzlygrkfcgz7dfmhm5xixlx1l0m60v-pan-0.132
* nix-env -i: if an argument contains a slash anywhere, treat it as a
path and follow it through symlinks into the Nix store. This allows
things like
$ nix-build -A firefox
$ nix-env -i ./result
* nix-env -q/-i/-e: don't complain when the `*' selector doesn't match
anything. In particular, `nix-env -q \*' doesn't fail anymore on an
empty profile.
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but installations/upgrades as well. So `nix-env -ub \*' will
upgrade only those packages for which a substitute is available (or
to be precise, it will upgrade each package to the highest version
for which a substitute is available).
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the given attribute path (just as -A does with other option)
(NIX-83). So you can now say
$ nix-env -qa -A nixpkgs_unstable.gnome \*
atk-1.12.4
esound-0.2.36
...
to see the packages in the "gnome" attribute in Nixpkgs.
To *print* the attribute path, you should now use "--attr-path" /
"-P" (running out of letters...).
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Nix expressions in that directory are combined into an attribute set
{file1 = import file1; file2 = import file2; ...}, i.e. each Nix
expression is an attribute with the file name as the attribute
name. Also recurses into directories.
* nix-env: removed the "--import" (-I) option which set the
~/.nix-defexpr symlink.
* nix-channel: don't use "nix-env --import", instead symlink
~/.nix-defexpr/channels. So finally nix-channel --update doesn't
override any default Nix expressions but combines with them.
This means that you can have (say) a local Nixpkgs SVN tree and use
it as a default for nix-env:
$ ln -s .../path-to-nixpkgs-tree ~/.nix-defexpr/nixpkgs_svn
and be subscribed to channels (including Nixpkgs) at the same time.
(If there is any ambiguity, the -A flag can be used to
disambiguate, e.g. "nix-env -i -A nixpkgs_svn.pan".)
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