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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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(e.g., "java-front-0.9pre15899" instead of "java-front";
particularly important when doing upgrades later on).
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--delete-generations: lock the profile to prevent (extremely
unlikely) race conditions.
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* Optimise header file usage a bit.
* Compile the parser as C++.
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$ nix-env -qa --system-filter \* --arg system '"powerpc-darwin"'
to override the system from the default value (__currentSystem in
all-packages.nix).
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representation instead of an ATerm.
* Indent XML output.
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automated processing.
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to functions from the command line.
* nix-build: started removing backticks.
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and put it into a separate function findAlongAttrPath().
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https://svn.cs.uu.nl:12443/repos/trace/buildfarm-control/trunk/ext/nix/,
with some modifications. This allows `nix-env -qa' to show the
attribute path that can be used to unambiguously install a package
using `nix-env -i -A'. Example:
$ nix-env -f top-level/all-packages.nix -qaA subversion xorg-server
subversionWithJava subversion-1.2.3
subversion subversion-1.3.2
subversion14 subversion-1.4.0pre-rc1
xorg.xorgserver xorg-server-1.1.0
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e.g.,
$ nix-env -i -A subversion xorg.xorgserver
The main advantage over using symbolic names is that using attribute
names is unambiguous and much, much faster.
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to the new version. This is actually useful.
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concurrent nix-env operations on the same profile. Fixes NIX-7.
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64 running 64-bit SUSE). A patched ATerm library is required to run Nix
succesfully.
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operations): share ATermMaps between DrvInfos.
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packages (provided that they have a `meta.description' attribute).
E.g.,
$ ./src/nix-env/nix-env -qa --description gcc
gcc-4.0.2 GNU Compiler Collection, 4.0.x (cross-compiler for sparc-linux)
gcc-4.0.2 GNU Compiler Collection, 4.0.x (cross-compiler for mips-linux)
gcc-4.0.2 GNU Compiler Collection, 4.0.x (cross-compiler for arm-linux)
gcc-4.0.2 GNU Compiler Collection, 4.0.x
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to be queried, e.g., `nix-env -qa firefox'. This does require the
argument '*' to be passed if one wants information about all
derivations, so the old `nix-env -qa' now is `nix-env -qa "*"'.
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expressions that cause an assertion failure (like `assert system ==
"i686-linux"'). This allows all-packages.nix in Nixpkgs to be used
on all platforms, even if some Nix expressions don't work on all
platforms.
Not sure if this is a good idea; it's a bit hacky. In particular,
due to laziness some derivations might appear in `nix-env -qa' but
disappear in `nix-env -qas' or `nix-env -i'.
Commit 5000!
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will be built or substituted.
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with the same name *and* version number, and pick the first one
(this means that the order in which channels appear in
~/.nix-channels matters). E.g.:
$ nix-env ii aterm
warning: there are multiple derivations named `aterm-2.4.2'; using the first one
installing `aterm-2.4.2'
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foo. Now it will only install the one with the highest version
number.
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("installing `foo'" followed by "uninstalling `foo'").
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versions to available versions, or vice versa.
For example, the following compares installed versions to available
versions:
$ nix-env -qc
autoconf-2.59 = 2.59
automake-1.9.4 < 1.9.6
f-spot-0.0.10 - ?
firefox-1.0.4 < 1.0.7
...
I.e., there are newer versions available (in the current default Nix
expression) for Automake and Firefox, but not for Autoconf, and
F-Spot is missing altogether.
Conversely, the available versions can be compared to the installed
versions:
$ nix-env -qac
autoconf-2.59 = 2.59
automake-1.9.6 > 1.9.4
bash-3.0 - ?
firefox-1.0.7 > 1.0.4
...
Note that bash is available but no version of it is installed.
If multiple versions are available for comparison, then the highest
is used. E.g., if Subversion 1.2.0 is installed, and Subversion
1.1.4 and 1.2.3 are available, then `nix-env -qc' will print `<
1.2.3', not `> 1.1.4'.
If higher versions are available, the version column is printed in
red (using ANSI escape codes).
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Reported by Rob Vermaas.
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makes most query and installation operations much faster (e.g.,
`nix-env -qa' on the current Nixpkgs is about 10 times faster).
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environment elements from one user environment to another, e.g.,
$ nix-env -i --from-profile /nix/var/nix/profiles/other-profile aterm
copies the `aterm' component installed in the `other-profile' to the
user's current profile.
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user environment, e.g.,
$ nix-env -i /nix/store/z58v41v21xd3ywrqk1vmvdwlagjx7f10-aterm-2.3.1.drv
or
$ nix-env -i /nix/store/hsyj5pbn0d9iz7q0aj0fga7cpaadvp1l-aterm-2.3.1
This is useful because it allows Nix expressions to be bypassed
entirely. For instance, if only a nix-pull manifest is provided,
plus the top-level path of some component, it can be installed
without having to supply the Nix expression (e.g., for obfuscation,
or to be independent of Nix expression language changes or context
dependencies).
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install derivations from a Nix expression specified on the command
line. This is particularly useful for disambiguation if there are
multiple derivations with the same name. For instance, in Nixpkgs,
to install the Firefox wrapper rather than the plain Firefox
component:
$ nix-env -f .../i686-linux.nix -i -E 'x: x.firefoxWrapper'
The Nix expressions should be functions to which the default Nix
expression (in this case, `i686-linux.nix') is passed, hence `x:
...'.
This might also be a nice way to deal with high-level (user-level)
variability, e.g.,
$ nix-env -f ./server.nix -i -E 'x: x {port = 8080; ssl = false;}'
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to derivations in user environments. Nice for developers (since it
prevents build-time-only dependencies from being GC'ed, in
conjunction with `gc-keep-outputs'). Turned off by default.
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* Set the references for the user environment manifest properly.
* Don't copy the manifest (this was accidental).
* Don't store derivation paths in the manifest (maybe this should be
made optional). This cleans up the semantics of nix-env, which were
weird.
* Hash on the output paths of activated components, not on derivation
paths. This is because we don't know the derivation path of already
installed components anymore, and it allows the installation of
components by store path (skipping Nix expressions entirely).
* Query options `--out-path' and `--drv-path' to show the output and
derivation paths of components, respectively (the latter replaces
the `--expr' query).
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though). In particular it's now much easier to register a GC root.
Just place a symlink to whatever store path it is that you want to
keep in /nix/var/nix/gcroots.
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This simplifies garbage collection and `nix-store --query
--requisites' since we no longer need to treat derivations
specially.
* Better maintaining of the invariants, e.g., setReferences() can only
be called on a valid/substitutable path.
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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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sequentially (within the limits set by `--jobs'). This should
greatly improve the utilisation of the build farm when doing Nixpkgs
builds.
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