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`nix-store --delete'. But unprivileged users are not allowed to
ignore liveness.
* `nix-store --delete --ignore-liveness': ignore the runtime roots as
well.
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containing functions that operate on the Nix store. One
implementation is LocalStore, which operates on the Nix store
directly. The next step, to enable secure multi-user Nix, is to
create a different implementation RemoteStore that talks to a
privileged daemon process that uses LocalStore to perform the actual
operations.
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concatenation and string coercion. This was a big mess (see
e.g. NIX-67). Contexts are now folded into strings, so that they
don't cause evaluation errors when they're not expected. The
semantics of paths has been clarified (see nixexpr-ast.def).
toString() and coerceToString() have been merged.
Semantic change: paths are now copied to the store when they're in a
concatenation (and in most other situations - that's the
formalisation of the meaning of a path). So
"foo " + ./bla
evaluates to "foo /nix/store/hash...-bla", not "foo
/path/to/current-dir/bla". This prevents accidental impurities, and
is more consistent with the treatment of derivation outputs, e.g.,
`"foo " + bla' where `bla' is a derivation. (Here `bla' would be
replaced by the output path of `bla'.)
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argument.
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* Optimise header file usage a bit.
* Compile the parser as C++.
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foo.nix -A attr --arg name value" will work if (name, value) is
needed in the evaluation leading up to "attr".
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produced by ATermMap. Necessary for testing.
* `--strict' should also work on stdin.
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so on.
* Removed `--print-args', it's subsumed by `--eval-only --xml'.
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representation instead of an ATerm.
* Indent XML output.
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result can be used more easily by scripts.
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to functions from the command line.
* nix-build: started removing backticks.
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functions arguments that have a domain.
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and put it into a separate function findAlongAttrPath().
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top-level function.
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Example:
$ nix-build ./all-packages.nix -A xlibs.libX11
So finally it's easy to perform a test build of a Nix expression!
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derivation(s) we're interested, e.g.,
$ nix-instantiate ./all-packages.nix --attr xlibs.libX11
List elements can also be selected:
$ nix-instantiate ./build-for-release.nix --attr 0.subversion
This allows a non-ambiguous specification of a derivation. Of
course, this should also be added to nix-env and nix-build.
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with default values automatically. I.e., e -> e {}.
This feature makes convenience expressions such as
pkgs/system/i686-linux.nix in Nixpkgs obsolete, since we can just do
$ nix-instantiate ./pkgs/system/all-packages.nix
since all-packages.nix takes a single argument (system) that has a
default value (__thisSystem).
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get rid of GC roots. Nix-build places a symlink `result' in the
current directory. Previously, removing that symlink would not
remove the store path being linked to as a GC root. Now, the GC
root created by nix-build is actually a symlink in
`/nix/var/nix/gcroots/auto' to `result'. So if that symlink is
removed the GC root automatically becomes invalid (since it can no
longer be resolved). The root itself is not automatically removed -
the garbage collector should delete dangling roots.
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immediately add the result as a permanent GC root. This is the only
way to prevent a race with the garbage collector. For instance, the
old style
ln -s $(nix-store -r $(nix-instantiate foo.nix)) \
/nix/var/nix/gcroots/result
has two time windows in which the garbage collector can interfere
(by GC'ing the derivation and the output, respectively). On the
other hand,
nix-store --add-root /nix/var/nix/gcroots/result -r \
$(nix-instantiate --add-root /nix/var/nix/gcroots/drv \
foo.nix)
is safe.
* nix-build: use `--add-root' to prevent GC races.
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`derivations.cc', etc.
* Store the SHA-256 content hash of store paths in the database after
they have been built/added. This is so that we can check whether
the store has been messed with (a la `rpm --verify').
* When registering path validity, verify that the closure property
holds.
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Instead we generate data bindings (build and match functions) for
the constructors specified in `constructors.def'. In particular
this removes the conversions between AFuns and strings, and Nix
expression evaluation now seems 3 to 4 times faster.
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out the AST as an ATerm.
* Mode `--eval-only' to parse and evaluate the input, and print the
resulting normal form as an ATerm.
Neither of these modes require store/DB write permission.
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print a nice backtrace of the stack, rather than vomiting a gigantic
(and useless) aterm on the screen. Example:
error: while evaluating file `.../pkgs/system/test.nix':
while evaluating attribute `subversion' at `.../pkgs/system/all-packages-generic.nix', line 533:
while evaluating function at `.../pkgs/applications/version-management/subversion/default.nix', line 1:
assertion failed at `.../pkgs/applications/version-management/subversion/default.nix', line 13
Since the Nix expression language is lazy, the trace may be
misleading. The purpose is to provide a hint as to the location of
the problem.
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* Various performance improvements in the evaluator.
* Do not link against unused (and missing!) libraries (-lsglr, etc.).
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$ nix-instantiate --help
error: unknown flag `--help`
Try `nix-instantiate --help' for more information.
:-)
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deleting a path in the store.
* Allow absolute paths in Nix expressions.
* Get nix-prefetch-url to work again.
* Various other fixes.
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that it can be used by multiple programs.
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* Several bug fixes in the grammar.
* Allow one-line comments (#... and //...) to end in EOF.
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* More refactoring.
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the build or run action should be perfomed on. This ensures that
descriptors have different hashes on different platforms.
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