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2013-10-17Fold two stack trace messages in derivationsEelco Dolstra
Combined with the previous changes, stack traces involving derivations are now much less verbose, since something like while evaluating the builtin function `getAttr': while evaluating the builtin function `derivationStrict': while instantiating the derivation named `gtk+-2.24.20' at `/home/eelco/Dev/nixpkgs/pkgs/development/libraries/gtk+/2.x.nix:11:3': while evaluating the derivation attribute `propagatedNativeBuildInputs' at `/home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/default.nix:78:17': while evaluating the attribute `outPath' at `/nix/store/212ngf4ph63mp6p1np2bapkfikpakfv7-nix-1.6/share/nix/corepkgs/derivation.nix:18:9': ... now reads while evaluating the attribute `propagatedNativeBuildInputs' of the derivation `gtk+-2.24.20' at `/home/eelco/Dev/nixpkgs/pkgs/development/libraries/gtk+/2.x.nix:11:3': ...
2013-10-17Don't show <nix/derivation.nix> in stack tracesEelco Dolstra
Messages like while evaluating the attribute `outPath' at `/nix/store/212ngf4ph63mp6p1np2bapkfikpakfv7-nix-1.6/share/nix/corepkgs/derivation.nix:18:9': are redundant, because Nix already shows that it's evaluating a derivation: while instantiating the derivation named `firefox-24.0' at `/home/eelco/Dev/nixpkgs/pkgs/applications/networking/browsers/firefox/default.nix:131:5': while evaluating the derivation attribute `nativeBuildInputs' at `/home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/default.nix:76:17':
2013-10-17Nix 1.6.1 release notesEelco Dolstra
2013-10-17Fix testEelco Dolstra
2013-10-17Test string semantics a bit moreEelco Dolstra
2013-10-17two typosgoblin
2013-10-17Ensure proper type checking/coercion of "${expr}"Eelco Dolstra
Now we only rewrite "${expr}" to expr if expr is a string literal.
2013-10-17Add a test for type correctness of antiquotesEelco Dolstra
Antiquotes should evaluate to strings or paths. This is usually checked, except in the case where the antiquote makes up the entire string, as in "${expr}". This is optimised to expr, which discards the runtime type checks / coercions.
2013-10-17Revert the behaviour of antiquoted paths to pre-Nix 1.6Eelco Dolstra
Commit 159e621d1a9c4391b53f3d822109c36931934698 accidentally changed the behaviour of antiquoted paths, e.g. "${/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.
2013-10-16Add a regression test for correct path antiquotation behaviorEelco Dolstra
This broke in Nix 1.6.
2013-10-16Retry all SQLite operationsEelco Dolstra
To deal with SQLITE_PROTOCOL, we also need to retry read-only operations.
2013-10-16Fix a race in registerFailedPath()Eelco Dolstra
Registering the path as failed can fail if another process does the same thing after the call to hasPathFailed(). This is extremely unlikely though.
2013-10-16Convenience macros for retrying a SQLite transactionEelco Dolstra
2013-10-16Don't wrap read-only queries in a transactionEelco Dolstra
There is no risk of getting an inconsistent result here: if the ID returned by queryValidPathId() is deleted from the database concurrently, subsequent queries involving that ID will simply fail (since IDs are never reused).
2013-10-16Print a distinct warning for SQLITE_PROTOCOLEelco Dolstra
2013-10-16Treat SQLITE_PROTOCOL as SQLITE_BUSYEelco Dolstra
In the Hydra build farm we fairly regularly get SQLITE_PROTOCOL errors (e.g., "querying path in database: locking protocol"). The docs for this error code say that it "is returned if some other process is messing with file locks and has violated the file locking protocol that SQLite uses on its rollback journal files." However, the SQLite source code reveals that this error can also occur under high load: if( cnt>5 ){ int nDelay = 1; /* Pause time in microseconds */ if( cnt>100 ){ VVA_ONLY( pWal->lockError = 1; ) return SQLITE_PROTOCOL; } if( cnt>=10 ) nDelay = (cnt-9)*238; /* Max delay 21ms. Total delay 996ms */ sqlite3OsSleep(pWal->pVfs, nDelay); } i.e. if certain locks cannot be not acquired, SQLite will retry a number of times before giving up and returing SQLITE_PROTOCOL. The comments say: Circumstances that cause a RETRY should only last for the briefest instances of time. No I/O or other system calls are done while the locks are held, so the locks should not be held for very long. But if we are unlucky, another process that is holding a lock might get paged out or take a page-fault that is time-consuming to resolve, during the few nanoseconds that it is holding the lock. In that case, it might take longer than normal for the lock to free. ... The total delay time before giving up is less than 1 second. On a heavily loaded machine like lucifer (the main Hydra server), which often has dozens of processes waiting for I/O, it seems to me that a page fault could easily take more than a second to resolve. So, let's treat SQLITE_PROTOCOL as SQLITE_BUSY and retry the transaction. Issue NixOS/hydra#14.
2013-10-14nix-shell: Fix bash completionEelco Dolstra
Nixpkgs's stdenv setup script sets the "nullglob" option, but doing so breaks Bash completion on NixOS (when ‘programs.bash.enableCompletion’ is set) and on Ubuntu. So clear that flag afterwards. Of course, this may break stdenv functions in subtle ways...
2013-10-11Adjust to the NixOS/Nixpkgs mergeEelco Dolstra
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
2013-10-02Report OOM errors betterEelco Dolstra
2013-10-02Fix typoEelco Dolstra
2013-09-18build-remote.pl: Don't use substituters on the remoteEelco Dolstra
It's kinda pointless to check substituters on the remote side, since we just checked them locally.
2013-09-17RestoreSink: Slightly reduce the number of concurrent FDsEelco Dolstra
2013-09-10Version was called 1.6, not 1.6.0Eelco Dolstra
2013-09-10Bump version numberEelco Dolstra
2013-09-10Update release notesEelco Dolstra
2013-09-06Remove stray debug lineEelco Dolstra
2013-09-06Don't apply the CPU affinity hack to nix-shell (and other Perl programs)Eelco Dolstra
As discovered by Todd Veldhuizen, the shell started by nix-shell has its affinity set to a single CPU. This is because nix-shell connects to the Nix daemon, which causes the affinity hack to be applied. So we turn this off for Perl programs.
2013-09-06typoDomen Kožar
2013-09-06nix-shell: Support a .drv as argumentEelco Dolstra
Fixes #161.
2013-09-03nix-env -i: Add a flag ‘--remove-all’ / ‘-r’Eelco Dolstra
This is equivalent to running ‘nix-env -e '*'’ first, except that it happens in a single transaction. Thus, ‘nix-env -i pkgs...’ replaces the profile with the specified set of packages. The main motivation is to support declarative package management (similar to environment.systemPackages in NixOS). That is, if you have a specification ‘profile.nix’ like this: with import <nixpkgs> {}; [ thunderbird geeqie ... ] then after any change to ‘profile.nix’, you can run: $ nix-env -f profile.nix -ir to update the profile to match the specification. (Without the ‘-r’ flag, if you remove a package from ‘profile.nix’, it won't be removed from the actual profile.) Suggested by @zefhemel.
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.
2013-09-03Check for name collisions in the input Nix expressionsEelco Dolstra
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).
2013-09-03ReformatEelco Dolstra
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
2013-09-02Lower xz compression levelEelco Dolstra
Fixes #84.
2013-09-02Manual: Make '' a bit clearerEelco Dolstra
Issue #162.
2013-09-02Fix manual errorEelco Dolstra
Reported by Matija Šuklje. Fixes #163.
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