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This can be used to implement functions like ‘imap’ (or for that
matter, ‘map’) without the quadratic complexity incurred by calling
‘++’ repeatedly.
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This is a generalisation of replaceChars in Nixpkgs.
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This fixes the quadratic behaviour of concatStrings/concatStringsSep
in Nixpkgs.
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These are used thousands of times during NixOS evaluation, so it's
useful to speed them up.
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The tarball cache is stored in $HOME, so the test should set up its
own $HOME.
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https://github.com/ctheune/nix
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it an option. :)
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* only the last generation can be lazy
* depend on the '--lazy-generation' flag to be set
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new generations if a generation already exists.
Alternatively or additionally I propose a mode where only the *last* generation will be sparse.
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The $channelName variable passed to the channel builder is the last
portion of the URL and while that works in the previous test for
channels prior to #519, it doesn't work if the last portion is
nixexprs.tar.bz2.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
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This ensures proper permissions for the secret key.
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Closes #473.
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Sodium's Ed25519 signatures are much shorter than OpenSSL's RSA
signatures. Public keys are also much shorter, so they're now
specified directly in the nix.conf option ‘binary-cache-public-keys’.
The new command ‘nix-store --generate-binary-cache-key’ generates and
prints a public and secret key.
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baseNameOf: Don't copy paths to the store first
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The function ‘builtins.match’ takes a POSIX extended regular
expression and an arbitrary string. It returns ‘null’ if the string
does not match the regular expression. Otherwise, it returns a list
containing substring matches corresponding to parenthesis groups in
the regex. The regex must match the entire string (i.e. there is an
implied "^<pat>$" around the regex). For example:
match "foo" "foobar" => null
match "foo" "foo" => []
match "f(o+)(.*)" "foooobar" => ["oooo" "bar"]
match "(.*/)?([^/]*)" "/dir/file.nix" => ["/dir/" "file.nix"]
match "(.*/)?([^/]*)" "file.nix" => [null "file.nix"]
The following example finds all regular files with extension .nix or
.patch underneath the current directory:
let
findFiles = pat: dir: concatLists (mapAttrsToList (name: type:
if type == "directory" then
findFiles pat (dir + "/" + name)
else if type == "regular" && match pat name != null then
[(dir + "/" + name)]
else []) (readDir dir));
in findFiles ".*\\.(nix|patch)" (toString ./.)
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With this, attribute sets with a `__functor` attribute can be applied
just like normal functions. This can be used to attach arbitrary
metadata to a function without callers needing to treat it specially.
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Note that unlike ‘lib.deepSeq’ in Nixpkgs, this handles cycles.
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For the "stdenv accidentally referring to bootstrap-tools", it seems
easier to specify the path that we don't want to depend on, e.g.
disallowedRequisites = [ bootstrapTools ];
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So all these years I was totally deluded about the meaning of "set
-e". You might think that it causes statements like "false && true" or
"! true" to fail, but it doesn't...
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It's part of Hydra now.
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The name ‘nixPath’ breaks existing code.
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When running NixOps under Mac OS X, we need to be able to import store
paths built on Linux into the local Nix store. However, HFS+ is
usually case-insensitive, so if there are directories with file names
that differ only in case, then importing will fail.
The solution is to add a suffix ("~nix~case~hack~<integer>") to
colliding files. For instance, if we have a directory containing
xt_CONNMARK.h and xt_connmark.h, then the latter will be renamed to
"xt_connmark.h~nix~case~hack~1". If a store path is dumped as a NAR,
the suffixes are removed. Thus, importing and exporting via a
case-insensitive Nix store is round-tripping. So when NixOps calls
nix-copy-closure to copy the path to a Linux machine, you get the
original file names back.
Closes #119.
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We were importing paths without sorting them topologically, leading to
"path is not valid" errors.
See e.g. http://hydra.nixos.org/build/12451761
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Fixes #294.
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There really is no case I can think of where taking the context into
account is useful. Mostly it's just very inconvenient.
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