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finished yet.
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trying to upgrade a package.
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manager work on OpenSolaris
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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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logic through the `parseDrvName' and `compareVersions' primops.
This will allow expressions to easily check whether some dependency
is a specific needed version or falls in some version range. See
tests/lang/eval-okay-versions.nix for examples.
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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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by priority and version install. That is, if there are multiple
packages with the same name, then pick the package with the highest
priority, and only use the version if there are multiple packages
with the same priority.
This makes it possible to mark specific versions/variant in Nixpkgs
more or less desirable than others. A typical example would be a
beta version of some package (e.g., "gcc-4.2.0rc1") which should not
be installed even though it is the highest version, except when it
is explicitly selected (e.g., "nix-env -i gcc-4.2.0rc1").
* Idem for nix-env -u, only the semantics are a bit trickier since we
also need to take into account the priority of the currently
installed package (we never upgrade to a lower priority, unless
--always is given).
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a user environment by an install or upgrade action. This is
particularly useful if you have a version installed that you don't
want to upgrade (e.g., because the newer versions are broken).
Example:
$ nix-env -u zapping --dry-run
(dry run; not doing anything)
upgrading `zapping-0.9.6' to `zapping-0.10cvs6'
$ nix-env --set-flag keep true zapping
$ nix-env -u zapping --dry-run
(dry run; not doing anything)
However, "-e" will still uninstall the package. (Maybe we should
require the keep flag to be explicitly set to false before it can be
uninstalled.)
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to show only those derivations whose output is already in the Nix
store or that can be substituted (i.e., downloaded from somewhere).
In other words, it shows the packages that can be installed “quickly”,
i.e., don’t need to be built from source.
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attribute) about installed packages in user environments. Thus, an
operation like `nix-env -q --description' shows useful information
not only on available packages but also on installed packages.
* nix-env now passes the entire manifest as an argument to the Nix
expression of the user environment builder (not just a list of
paths), so that in particular the user environment builder has
access to the meta attributes.
* New operation `--set-flag' in nix-env to change meta info of
installed packages. This will be useful to pass per-package
policies to the user environment builder (e.g., how to resolve
collision or whether to disable a package (NIX-80)) or upgrade
policies in nix-env (e.g., that a package should be "masked", that
is, left untouched by upgrade actions). Example:
$ nix-env --set-flag enabled false ghc-6.4
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single derivation specified by the argument. This is useful when we
want to have a profile for a single derivation, such as a server
configuration. Then we can just say (e.g.)
$ nix-env -p /.../server-profile -f server.nix --set -A server
We can't do queries or upgrades on such a profile, but we can do
rollbacks. The advantage over -i is that we don't have to worry
about other packages having been installed in the profile
previously; --set gets rid of them.
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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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syncWithGC() to allow clients to register GC roots without needing
write access to the global roots directory or the GC lock.
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* Added new operation hasSubstitutes(), which is more efficient than
querySubstitutes().size() > 0.
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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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