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2016-02-04 Eliminate the "store" global variableEelco Dolstra1-29/+28
Also, move a few free-standing functions into StoreAPI and Derivation. Also, introduce a non-nullable smart pointer, ref<T>, which is just a wrapper around std::shared_ptr ensuring that the pointer is never null. (For reference-counted values, this is better than passing a "T&", because the latter doesn't maintain the refcount. Usually, the caller will have a shared_ptr keeping the value alive, but that's not always the case, e.g., when passing a reference to a std::thread via std::bind.)
2016-01-07 Fix some signedness warningsEelco Dolstra1-1/+1
2016-01-05 Better error messageFabian Schmitthenner1-1/+1
Also show types when nix cannot compare values of different types. This is also more consistent since types are already shown when comparing values of the same not comparable type.
2016-01-05 manual: document builtins.functionArgsVladimír Čunát1-1/+1
The text is just a conversion of comment from src/libexpr/primops.cc
2015-07-28 Add sort primopEelco Dolstra1-1/+36
2015-07-28 Add primop genListEelco Dolstra1-0/+20
This can be used to implement functions like ‘imap’ (or for that matter, ‘map’) without the quadratic complexity incurred by calling ‘++’ repeatedly.
2015-07-24 Add replaceStrings primopEelco Dolstra1-1/+37
This is a generalisation of replaceChars in Nixpkgs.
2015-07-24 Add concatStringsSep as a primopEelco Dolstra1-0/+21
This fixes the quadratic behaviour of concatStrings/concatStringsSep in Nixpkgs.
2015-07-23 Optimize small listsEelco Dolstra1-58/+58
The value pointers of lists with 1 or 2 elements are now stored in the list value itself. In particular, this makes the "concatMap (x: if cond then [(f x)] else [])" idiom cheaper.
2015-07-23 Add primops all and anyEelco Dolstra1-0/+33
These are used thousands of times during NixOS evaluation, so it's useful to speed them up.
2015-07-23 Importing derivations: Add name attribute to make a valid drvShea Levy1-1/+3
2015-07-23 Allow derivations-as-srcs in the context of builtins.toFile filesShea Levy1-2/+6
2015-07-23 Add foldl' primopEelco Dolstra1-0/+24
2015-07-17 OCD: foreach -> C++11 ranged forEelco Dolstra1-50/+45
2015-06-01 Fix fetchurl/fetchTarballEelco Dolstra1-1/+2
2015-06-01 readFile: Check against nul bytesEelco Dolstra1-1/+4
2015-05-05 Allow URLs in the Nix search pathEelco Dolstra1-85/+3
E.g. to install "hello" from the latest Nixpkgs: $ nix-build '<nixpkgs>' -A hello -I nixpkgs=https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz Or to install a specific version of NixOS: $ nixos-rebuild switch -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/63def04891a0abc328b1b0b3a78ec02c58f48583.tar.gz
2015-04-09 Use cached result if there is a network errorEelco Dolstra1-7/+12
2015-04-09 Move curl stuff into a separate fileEelco Dolstra1-112/+6
2015-04-09 Implement a TTL on cached fetchurl/fetchTarball resultsEelco Dolstra1-13/+24
This is because we don't want to do HTTP requests on every evaluation, even though we can prevent a full redownload via the cached ETag. The default is one hour.
2015-04-09 Implement caching of fetchurl/fetchTarball resultsEelco Dolstra1-14/+119
ETags are used to prevent redownloading unchanged files.
2015-03-25 Add fetchTarball builtinEelco Dolstra1-0/+119
This function downloads and unpacks the given URL at evaluation time. This is primarily intended to make it easier to deal with Nix expressions that have external dependencies. For instance, to fetch Nixpkgs 14.12: with import (fetchTarball https://github.com/NixOS/nixpkgs-channels/archive/nixos-14.12.tar.gz) {}; Or to fetch a specific revision: with import (fetchTarball https://github.com/NixOS/nixpkgs/archive/2766a4b44ee6eafae03a042801270c7f6b8ed32a.tar.gz) {}; This patch also adds a ‘fetchurl’ builtin that downloads but doesn't unpack its argument. Not sure if it's useful though.
2015-03-25 addToStore(): Take explicit name argumentEelco Dolstra1-1/+1
2015-03-24 Don't rely on __noChroot for corepkgsEelco Dolstra1-2/+5
This doesn't work anymore if the "strict" chroot mode is enabled. Instead, add Nix's store path as a dependency. This ensures that its closure is present in the chroot.
2015-03-06 Fix typos: s/the the/the/Daniel Hahler1-1/+1
2015-02-23 Add restricted evaluation modeEelco Dolstra1-7/+21
If ‘--option restrict-eval true’ is given, the evaluator will throw an exception if an attempt is made to access any file outside of the Nix search path. This is primarily intended for Hydra, where we don't want people doing ‘builtins.readFile ~/.ssh/id_dsa’ or stuff like that.
2015-02-05 Remove tabEelco Dolstra1-1/+1
2015-01-29 Merge remote-tracking branch 'shlevy/baseNameOf-no-copy'Shea Levy1-1/+1
baseNameOf: Don't copy paths to the store first
2015-01-09 Fix builtins.readDir on XFSEelco Dolstra1-1/+1
The DT_UNKNOWN fallback code was getting the type of the wrong path, causing readDir to report "directory" as the type of every file. Reported by deepfire on IRC.
2015-01-07 Show position info for failing <...> lookupsEelco Dolstra1-1/+1
2014-12-12 Remove canary stuffEelco Dolstra1-27/+0
2014-12-10 builtins.readFile: realise context associated with the pathShea Levy1-2/+6
2014-12-02 Allow external code using libnixexpr to add typesShea Levy1-0/+3
Code that links to libnixexpr (e.g. plugins loaded with importNative, or nix-exec) may want to provide custom value types and operations on values of those types. For example, nix-exec is currently using sets where a custom IO value type would be more appropriate. This commit provides a generic hook for such types in the form of tExternal and the ExternalBase virtual class, which contains all functions necessary for libnixexpr's type-polymorphic functions (e.g. `showType`) to be implemented.
2014-11-25 Add a primop for regular expression pattern matchingEelco Dolstra1-1/+29
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 ./.)
2014-11-25 forceString(): Accept pos argumentEelco Dolstra1-2/+2
2014-11-20 import derivation: cleanupShea Levy1-8/+11
Before this there was a bug where a `find` was being called on a not-yet-sorted set. The code was just a mess before anyway, so I cleaned it up while fixing it.
2014-11-15 realiseContext: Handle all context typesShea Levy1-2/+2
Avoids an assertion
2014-10-18 baseNameOf: Don't copy paths to the store firstShea Levy1-1/+1
2014-10-17 Export realiseContext in libnixexprShea Levy1-9/+3
Useful for importNative plugins
2014-10-04 Add primop ‘catAttrs’Eelco Dolstra1-0/+30
2014-10-04 Add primop ‘attrValues’Eelco Dolstra1-1/+23
2014-10-04 TweakEelco Dolstra1-1/+1
2014-10-03 Remove some duplicate codeEelco Dolstra1-15/+8
2014-10-03 Add readDir primopShea Levy1-0/+37
2014-09-23 Add missing staticEelco Dolstra1-2/+2
2014-09-22 Don't evaluate inside a "throw"Eelco Dolstra1-3/+4
Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41174. This caused hydra-eval-jobs to ignore SIGINT.
2014-09-22 Add ‘deepSeq’ primopEelco Dolstra1-0/+11
Note that unlike ‘lib.deepSeq’ in Nixpkgs, this handles cycles.
2014-09-22 Add ‘seq’ primopEelco Dolstra1-0/+12
2014-09-22 Add a function ‘valueSize’Eelco Dolstra1-0/+10
It returns the size of value, including all other values and environments reachable from it. It is intended for debugging memory consumption issues.
2014-09-19 attrNames: Don't allocate duplicates of the symbolsEelco Dolstra1-6/+4