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2013-11-12 Add a test to check that tail calls run in bounded stack spaceEelco Dolstra2-0/+4
2013-11-12 Make function calls tail-recursiveEelco Dolstra4-40/+65
2013-11-12 Make ifs and asserts tail-recursiveEelco Dolstra2-4/+11
The local Value object prevented g++ from making a tail call. Not clear why. In any case, not using a temporary makes g++ do the tail call.
2013-11-12 Get rid of an intermediary on the stackEelco Dolstra2-13/+17
2013-10-28 Fix building without a garbage collectorEelco Dolstra1-5/+5
http://hydra.nixos.org/build/6695350
2013-10-28 Fix a segfault in genericClosureEelco Dolstra1-16/+25
It kept temporary data in STL containers that were not scanned by Boehm GC, so Nix programs using genericClosure could randomly crash if the garbage collector kicked in at a bad time. Also make it a bit more efficient by copying points to values rather than values.
2013-10-28 Drop Cygwin and Solaris buildsEelco Dolstra1-1/+1
2013-10-28 Update release notes, set version for 1.6.1 releaseEelco Dolstra2-2/+7
2013-10-28 Slightly optimize listToAttrsEelco Dolstra3-9/+10
2013-10-24 Undocument obsolete form of "let"Eelco Dolstra1-8/+2
2013-10-24 Doc fixEelco Dolstra1-2/+2
2013-10-24 Fix segfault on DarwinEelco Dolstra2-0/+2
Ever since SQLite in Nixpkgs was updated to 3.8.0.2, Nix has randomly segfaulted on Darwin: http://hydra.nixos.org/build/6175515 http://hydra.nixos.org/build/6611038 It turns out that this is because the binary cache substituter somehow ends up loading two versions of SQLite: the one in Nixpkgs and the other from /usr/lib/libsqlite3.dylib. It's not exactly clear why the latter is loaded, but it appears to be because WWW::Curl indirectly loads /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation, which in turn seems to load /usr/lib/libsqlite3.dylib. This leads to a segfault when Perl exits: #0 0x00000001010375f4 in sqlite3_finalize () #1 0x000000010125806e in sqlite_st_destroy () #2 0x000000010124bc30 in XS_DBD__SQLite__st_DESTROY () #3 0x00000001001c8155 in XS_DBI_dispatch () ... #14 0x0000000100023224 in perl_destruct () #15 0x0000000100000d6a in main () ... The workaround is to explicitly load DBD::SQLite before WWW::Curl.
2013-10-24 Rename "attribute sets" to "sets"Eelco Dolstra13-160/+152
We don't have any other kind of sets so calling them attribute sets is unnecessarily verbose.
2013-10-24 Manual: Fix broken URLsEelco Dolstra2-3/+3
Fixes #172.
2013-10-24 Add rpm_fedora19i386 to the release-critical buildsEelco Dolstra1-1/+1
2013-10-24 Remove unnecessary call to forceStringNoCtxEelco Dolstra1-1/+1
2013-10-24 Document typeOfEelco Dolstra1-0/+13
2013-10-24 Add a test of the type primopsEelco Dolstra2-0/+24
2013-10-24 Add a typeOf primopEelco Dolstra1-3/+28
We already have some primops for determining the type of a value, such as isString, but they're incomplete: for instance, there is no isPath. Rather than adding more isBla functions, the generic typeOf function returns a string representing the type of the argument (e.g. "int").
2013-10-24 Document NIX_SHOW_STATS and NIX_COUNT_CALLSEelco Dolstra1-0/+18
2013-10-24 Don't require NIX_SHOW_STATS for NIX_COUNT_CALLSEelco Dolstra1-0/+1
2013-10-23 Memoize evalFile() lookups under both the original and resolved nameEelco Dolstra1-4/+9
Previously we only used the resolved name, causing repeated resolution (e.g. /dir to /dir/default.nix).
2013-10-23 Add an aggregate jobEelco Dolstra1-4/+36
Also, build for Ubuntu 13.10 and Fedora 19.
2013-10-22 For auto roots, show the intermediate linkEelco Dolstra1-1/+1
I.e. "nix-store -q --roots" will now show (for example) /home/eelco/Dev/nixpkgs/result rather than /nix/var/nix/gcroots/auto/53222qsppi12s2hkap8dm2lg8xhhyk6v
2013-10-18 Don't set $PS1 in non-interactive shellsEelco Dolstra1-1/+1
Shouldn't really matter, but you never know.
2013-10-18 nix-shell: Play nicely with non-interactive shellsShea Levy1-1/+3
nix-shell with the --command flag might be used non-interactively, but if bash starts non-interactively (i.e. with stdin or stderr not a terminal), it won't source the script given in --rcfile. However, in that case it *will* source the script found in $BASH_ENV, so we can use that instead. Also, don't source ~/.bashrc in a non-interactive shell (detectable by checking the PS1 env var) Signed-off-by: Shea Levy <shea@shealevy.com>
2013-10-17 Fold two stack trace messages in derivationsEelco Dolstra2-6/+5
Combined with the previous changes, stack traces involving derivations are now much less verbose, since something like while evaluating the builtin function `getAttr': while evaluating the builtin function `derivationStrict': while instantiating the derivation named `gtk+-2.24.20' at `/home/eelco/Dev/nixpkgs/pkgs/development/libraries/gtk+/2.x.nix:11:3': while evaluating the derivation attribute `propagatedNativeBuildInputs' at `/home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/default.nix:78:17': while evaluating the attribute `outPath' at `/nix/store/212ngf4ph63mp6p1np2bapkfikpakfv7-nix-1.6/share/nix/corepkgs/derivation.nix:18:9': ... now reads while evaluating the attribute `propagatedNativeBuildInputs' of the derivation `gtk+-2.24.20' at `/home/eelco/Dev/nixpkgs/pkgs/development/libraries/gtk+/2.x.nix:11:3': ...
2013-10-17 Don't show <nix/derivation.nix> in stack tracesEelco Dolstra3-2/+5
Messages like while evaluating the attribute `outPath' at `/nix/store/212ngf4ph63mp6p1np2bapkfikpakfv7-nix-1.6/share/nix/corepkgs/derivation.nix:18:9': are redundant, because Nix already shows that it's evaluating a derivation: while instantiating the derivation named `firefox-24.0' at `/home/eelco/Dev/nixpkgs/pkgs/applications/networking/browsers/firefox/default.nix:131:5': while evaluating the derivation attribute `nativeBuildInputs' at `/home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/default.nix:76:17':
2013-10-17 Nix 1.6.1 release notesEelco Dolstra1-0/+60
2013-10-17 Fix testEelco Dolstra1-1/+2
2013-10-17 Test string semantics a bit moreEelco Dolstra2-3/+6
2013-10-17 two typosgoblin1-2/+2
2013-10-17 Ensure proper type checking/coercion of "${expr}"Eelco Dolstra1-2/+3
Now we only rewrite "${expr}" to expr if expr is a string literal.
2013-10-17 Add a test for type correctness of antiquotesEelco Dolstra3-0/+3
Antiquotes should evaluate to strings or paths. This is usually checked, except in the case where the antiquote makes up the entire string, as in "${expr}". This is optimised to expr, which discards the runtime type checks / coercions.
2013-10-17 Revert the behaviour of antiquoted paths to pre-Nix 1.6Eelco Dolstra1-4/+4
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.
2013-10-16 Add a regression test for correct path antiquotation behaviorEelco Dolstra1-0/+4
This broke in Nix 1.6.
2013-10-16 Retry all SQLite operationsEelco Dolstra2-128/+169
To deal with SQLITE_PROTOCOL, we also need to retry read-only operations.
2013-10-16 Fix a race in registerFailedPath()Eelco Dolstra1-2/+1
Registering the path as failed can fail if another process does the same thing after the call to hasPathFailed(). This is extremely unlikely though.
2013-10-16 Convenience macros for retrying a SQLite transactionEelco Dolstra1-46/+42
2013-10-16 Don't wrap read-only queries in a transactionEelco Dolstra1-6/+0
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).
2013-10-16 Print a distinct warning for SQLITE_PROTOCOLEelco Dolstra1-4/+8
2013-10-16 Treat SQLITE_PROTOCOL as SQLITE_BUSYEelco Dolstra1-1/+1
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.
2013-10-14 nix-shell: Fix bash completionEelco Dolstra1-0/+1
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...
2013-10-11 Adjust to the NixOS/Nixpkgs mergeEelco Dolstra2-2/+2
2013-10-08 printStats(): Print the size of the symbol table in bytesEelco Dolstra3-0/+15
2013-10-08 Deduplicate filenames in PosEelco Dolstra3-6/+7
This saves ~4 MiB of RAM for NixOS system instantiation, and ~18 MiB for "nix-env -qa".
2013-10-08 Treat undefined variable errors consistentlyEelco Dolstra3-2/+8
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).
2013-10-08 Show the exact position of undefined variablesEelco Dolstra4-21/+18
In particular, undefined variable errors in a "with" previously didn't show *any* position information, so this should help a lot in those cases.
2013-10-08 Remove some unused functionsEelco Dolstra1-15/+0
2013-10-08 Merge VarRef into ExprVarEelco Dolstra4-21/+8
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