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2013-10-17Ensure proper type checking/coercion of "${expr}"Eelco Dolstra
Now we only rewrite "${expr}" to expr if expr is a string literal.
2013-10-17Revert the behaviour of antiquoted paths to pre-Nix 1.6Eelco Dolstra
Commit 159e621d1a9c4391b53f3d822109c36931934698 accidentally changed the behaviour of antiquoted paths, e.g. "${/foo}/bar" used to evaluate to "/nix/store/<hash>-foo/bar" (where /foo gets copied to the store), but in Nix 1.6 it evaluates to "/foo/bar". This is inconsistent, since " ${/foo}/bar" evaluates to " /nix/store/<hash>-foo/bar". So revert to the old behaviour.
2013-10-08printStats(): Print the size of the symbol table in bytesEelco Dolstra
2013-10-08Deduplicate filenames in PosEelco Dolstra
This saves ~4 MiB of RAM for NixOS system instantiation, and ~18 MiB for "nix-env -qa".
2013-10-08Treat undefined variable errors consistentlyEelco Dolstra
Previously, a undefined variable inside a "with" caused an EvalError (which can be caught), while outside, it caused a ParseError (which cannot be caught). Now both cause an UndefinedVarError (which cannot be caught).
2013-10-08Show the exact position of undefined variablesEelco Dolstra
In particular, undefined variable errors in a "with" previously didn't show *any* position information, so this should help a lot in those cases.
2013-10-08Remove some unused functionsEelco Dolstra
2013-10-08Merge VarRef into ExprVarEelco Dolstra
2013-10-07Don't show calls to primops in stack tracesEelco Dolstra
Since they don't have location information, they just give you crap like: while evaluating the builtin function `getAttr': while evaluating the builtin function `derivationStrict': ...
2013-10-02Fix segfault in nix-repl / hydra-eval-jobsEelco Dolstra
If a "with" attribute set fails to evaluate, we have to make sure its Env record remains unchanged. Otherwise, repeated evaluation gives a segfault: nix-repl> :a with 0; { a = x; b = x; } Added 2 variables. nix-repl> a error: value is an integer while an attribute set was expected nix-repl> b Segmentation fault
2013-09-03nix-env: Use wildcard match by defaultEelco Dolstra
That is, you don't need to pass '*' anymore, so nix-env -qa is equivalent to nix-env -qa '*'
2013-09-03nix-env: Load files in ~/.nix-defexpr on demandEelco Dolstra
So if you do "nix-env -qa -A nixos", then other channels won't be parsed/evaluated at all.
2013-09-03Work on Values instead of ExprsEelco Dolstra
This prevents some duplicate evaluation in nix-env and nix-instantiate. Also, when traversing ~/.nix-defexpr, only read regular files with the extension .nix. Previously it was reading files like .../channels/binary-caches/<name>. The only reason this didn't cause problems is pure luck (namely, <name> shadows an actual Nix expression, the binary-caches files happen to be syntactically valid Nix expressions, and we iterate over the directory contents in just the right order).
2013-09-03Get rid of the parse tree cacheEelco Dolstra
Since we already cache files in normal form (fileEvalCache), caching parse trees is redundant. Note that getting rid of this cache doesn't actually save much memory at the moment, because parse trees are currently not freed / GC'ed.
2013-09-02Add some support code for nix-replEelco Dolstra
2013-09-02Get rid of a signedness warningEelco Dolstra
2013-09-02Fix whitespaceEelco Dolstra
2013-08-26Simplify inherited attribute handlingShea Levy
This reduces the difference between inherited and non-inherited attribute handling to the choice of which env to use (in recs and lets) by setting the AttrDef::e to a new ExprVar in the parser rather than carrying a separate AttrDef::v VarRef member. As an added bonus, this allows inherited attributes that inherit from a with to delay forcing evaluation of the with's attributes. Signed-off-by: Shea Levy <shea@shealevy.com>
2013-08-26Fix typos, especially those that end up in the Nix manualIvan Kozik
2013-08-19Store Nix integers as longsEelco Dolstra
So on 64-bit systems, integers are now 64-bit. Fixes #158.
2013-08-14TypoEelco Dolstra
2013-08-06Remove obsolete reference to ATermsEelco Dolstra
2013-08-02In the profiler output, show function names (if available)Eelco Dolstra
2013-08-02Let the ordering operators also work on stringsEelco Dolstra
E.g. ‘"foo" < "bar"’ now works.
2013-08-02Add comparison operators ‘<’, ‘<=’, ‘>’ and ‘>=’Eelco Dolstra
2013-08-02Add integer ‘-’, ‘*’ and ‘/’ operatorsEelco Dolstra
2013-08-02Add a unary integer negation operatorEelco Dolstra
This allows saying "-1" instead of "builtins.sub 0 1".
2013-08-02Overload the ‘+’ operator to support integer additionEelco Dolstra
2013-07-31Make Env smallerEelco Dolstra
Commit 20866a7031ca823055a221653b77986faa167329 added a ‘withAttrs’ field to Env, which is annoying because it makes every Env structure bigger and we allocate millions of them. E.g. NixOS evaluation took 18 MiB more. So this commit squeezes ‘withAttrs’ into values[0]. Probably should use a union...
2013-07-31Don't use NULLEelco Dolstra
2013-07-31Avoid thunks when a fromWith var can be looked up without evaluationShea Levy
Signed-off-by: Shea Levy <shea@shealevy.com>
2013-07-31Delay evaulation of `with` attrs until a variable lookup needs themShea Levy
Evaluation of attribute sets is strict in the attribute names, which means immediate evaluation of `with` attribute sets rules out some potentially interesting use cases (e.g. where the attribute names of one set depend in some way on another but we want to bring those names into scope for some values in the second set). The major example of this is overridable self-referential package sets (e.g. all-packages.nix). With immediate `with` evaluation, the only options for such sets are to either make them non-recursive and explicitly use the name of the overridden set in non-overridden one every time you want to reference another package, or make the set recursive and use the `__overrides` hack. As shown in the test case that comes with this commit, though, delayed `with` evaluation allows a nicer third alternative. Signed-off-by: Shea Levy <shea@shealevy.com>
2013-05-16Show function names in error messagesEelco Dolstra
Functions in Nix are anonymous, but if they're assigned to a variable/attribute, we can use the variable/attribute name in error messages, e.g. while evaluating `concatMapStrings' at `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/strings.nix:18:25': ...
2013-05-16Show which function argument was unexpectedEelco Dolstra
Fixes #116.
2013-05-16Shut up a compiler warningEelco Dolstra
2013-03-14Fix building against Bison 2.6Eelco Dolstra
2013-03-14Make sure that thunks are restored properly if an exception occursEelco Dolstra
Fixes Hydra bug #67.
2013-03-08Revert "Prevent config.h from being clobbered"Eelco Dolstra
This reverts commit 28bba8c44f484eae38e8a15dcec73cfa999156f6.
2013-03-07Prevent config.h from being clobberedEelco Dolstra
2013-02-08Make "${./path} ..." evaluate to a string, not a pathEelco Dolstra
Wacky string coercion semantics caused expressions like exec = "${./my-script} params..."; to evaluate to a path (‘/path/my-script params’), because anti-quotations are desuged to string concatenation: exec = ./my-script + " params..."; By constrast, adding a space at the start would yield a string as expected: exec = " ${./my-script} params..."; Now the first example also evaluates to a string.
2013-02-08Rename "hash" to "hashString" and handle SHA-1Eelco Dolstra
2013-02-08experimental/hashMarc Weber
adding primop function calculating hash of a string Signed-off-by: Marc Weber <marco-oweber@gmx.de>
2012-12-13fix use-after-free bug in mkString(Value&, Symbol&)Stuart Pernsteiner
2012-12-04Tiny optimisation in the filter primopEelco Dolstra
2012-11-28nix-env -q --out-path: Support multiple outputsEelco Dolstra
We now print all output paths of a package, e.g. openssl-1.0.0i bin=/nix/store/gq2mvh0wb9l90djvsagln3aqywqmr6vl-openssl-1.0.0i-bin;man=/nix/store/7zwf5r5hsdarl3n86dasvb4chm2xzw9n-openssl-1.0.0i-man;/nix/store/cj7xvk7fjp9q887359j75pw3pzjfmqf1-openssl-1.0.0i or (in XML mode) <item attrPath="openssl" name="openssl-1.0.0i" system="x86_64-linux"> <output name="bin" path="/nix/store/gq2mvh0wb9l90djvsagln3aqywqmr6vl-openssl-1.0.0i-bin" /> <output name="man" path="/nix/store/7zwf5r5hsdarl3n86dasvb4chm2xzw9n-openssl-1.0.0i-man" /> <output name="out" path="/nix/store/cj7xvk7fjp9q887359j75pw3pzjfmqf1-openssl-1.0.0i" /> </item>
2012-11-27Optionally ignore null-valued derivation attributesEelco Dolstra
This allows adding attributes like attr = if stdenv.system == "bla" then something else null; without changing the resulting derivation on non-<bla> platforms. We once considered adding a special "ignore" value for this purpose, but using null seems more elegant.
2012-11-27Add builtin constants ‘langVersion’ and ‘nixVersion’Eelco Dolstra
The integer constant ‘langVersion’ denotes the current language version. It gets increased every time a language feature is added/changed/removed. It's currently 1. The string constant ‘nixVersion’ contains the current Nix version, e.g. "1.2pre2980_9de6bc5".
2012-11-26nix-instantiate: Fix read-only evaluationEelco Dolstra
2012-11-15Revert "prim_toPath: Actually make the string a path"Eelco Dolstra
This reverts commit 2980d1fba97069805c3649c5d99d0356bce6c303. It causes a regression in NixOS evaluation: string `/nix/store/ya3s5gmj3b28170fpbjhgsk8wzymkpa1-pommed-1.39/etc/pommed.conf' cannot refer to other paths
2012-11-09Fix a segfault when auto-calling a "a@{...}" functionEelco Dolstra
Since the called function can return its argument attribute set (e.g. "a"), the latter should not be allocated on the stack. Reported by Shea.
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