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another machine through ssh. E.g.,
$ nix-copy-closure xyzzy $(which svn)
copies the closure of Subversion to machine `xyzzy'. This is like
`nix-pack-closure $(which svn) | ssh xyzzy', but it's much more
efficient since it only copies those paths that are missing on the
target machine.
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under the references relation. This is useful for commands that
want to copy paths to another Nix store in the right order.
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which paths specified on the command line are invalid (i.e., don't
barf when encountering an invalid path, just print it). This is
useful for build-remote.pl to figure out which paths need to be
copied to a remote machine. (Currently we use rsync, but that's
rather inefficient.)
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always requires a signature on the archive. This is to ensure that
unprivileged users cannot add Trojan horses to the Nix store.
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* exportPath(): lock the path, use a transaction.
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--export' into the Nix store, and optionally check the cryptographic
signatures against /nix/etc/nix/signing-key.pub. (TODO: verify
against a set of public keys.)
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in /nix/etc/nix/signing-key.sec
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path. This is like `nix-store --dump', only it also dumps the
meta-information of the store path (references, deriver). Will add
a `--sign' flag later to add a cryptographic signature, which we
will use for exchanging store paths between build farm machines in a
secure manner.
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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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computing the store path (NIX-77). This is an important security
property in multi-user Nix stores.
Note that this changes the store paths of derivations (since the
derivation aterms are added using addTextToStore), but not most
outputs (unless they use builtins.toFile).
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* `sub' to subtract two numbers.
* `stringLength' to get the length of a string.
* `substring' to get a substring of a string. These should be enough
to allow most string operations to be expressed.
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paths. Paths can have unexpected semantics.
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programs, so if a builder uses TMPDIR, then it will fail when
executed through nix-setuid-helper. In fact Glibc clears a whole
bunch of variables (see sysdeps/generic/unsecvars.h in the Glibc
sources), but only TMPDIR should matter in practice. As a
workaround, we reinitialise TMPDIR from NIX_BUILD_TOP.
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path can be created by copying it from another location in the file
system. This is useful in the NixOS installation.
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"directory", "symlink") as the second argument to the filter
predicate.
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important to get garbage collection to work if there is any
inconsistency in the database (because the referrer table is used to
determine whether it is safe to delete a path).
* `nix-store --verify': show some progress.
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errors: in-use paths now cause a warning, not a fatal error.
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* nix-unpack-closure: extract the top-level paths from the closure and
print them on stdout. This allows them to be installed, e.g.,
"nix-env -i $(nix-unpack-closure)". (NIX-64)
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(NIX-74).
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info, sort attribute sets.
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<derivation outPath=... drvPath=...> attrs </derivation>. Only emit
the attributes of any specific derivation only. This prevents
exponententially large XML output due to the absense of sharing.
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(currently 60%). Large patches aren't very economical.
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