Add linux kernel modules needed to do kernel tracing with LTTng.
To make them available to lttng in NixOS, add this to configuration.nix:
boot.extraModulePackages = [ pkgs.linuxPackages.lttngModules ];
Babeltrace is a command-line tool and library to read and convert LTTng
tracefiles. Give it a (binary) trace file/dir path and it will print a
human readable event log to standard out.
This is the Linux Trace Toolkit. Included in this package:
Command-line client:
lttng
Tracing daemons:
lttng-sessiond (automatically started by lttng)
lttng-relayd (remote trace collection daemon)
Userspace tracing can be done by using liblttng-ust. To do kernel
tracing we also need the LTTng kernel modules.
I've added a patch that changes "/sbin/modprobe" to just "modprobe".
This reverts commit 67a46ce928.
It seems this commit is the reason for this hydra breakage:
[pbuilding /nix/store/hwdyx4mf5638mxkka64cxjcj75vw3hmz-nixpkgs-tarball-1.0pre28245_67a46ce
[punpacking sources
[...snip lots of stuff...]
'manual.pdf' successfully built
[qmake: Leaving directory `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/doc'
[q[q[prunning tests
[pchecking pkgs/top-level/all-packages.nix on i686-linux
error: while evaluating the attribute `drvPath' at `/nix/store/l7ny7f17aii5qfgmadr2wcp3wan54wlp-nix-1.5.3/share/nix/corepkgs/derivation.nix:19:9':
while evaluating the builtin function `derivationStrict':
while instantiating the derivation named `ruby-actionmailer-4.0.0' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/development/interpreters/ruby/gem.nix:16:5':
while evaluating the derivation attribute `propagatedNativeBuildInputs' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/stdenv/generic/default.nix:78:17':
while evaluating the attribute `outPath' at `/nix/store/l7ny7f17aii5qfgmadr2wcp3wan54wlp-nix-1.5.3/share/nix/corepkgs/derivation.nix:18:9':
while evaluating the builtin function `getAttr':
while evaluating the builtin function `derivationStrict':
while instantiating the derivation named `ruby-actionpack-4.0.0' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/development/interpreters/ruby/gem.nix:16:5':
while evaluating the derivation attribute `propagatedNativeBuildInputs' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/stdenv/generic/default.nix:78:17':
while evaluating the attribute `outPath' at `/nix/store/l7ny7f17aii5qfgmadr2wcp3wan54wlp-nix-1.5.3/share/nix/corepkgs/derivation.nix:18:9':
while evaluating the builtin function `getAttr':
while evaluating the builtin function `derivationStrict':
while instantiating the derivation named `ruby-activesupport-4.0.0' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/development/interpreters/ruby/gem.nix:16:5':
while evaluating the derivation attribute `propagatedNativeBuildInputs' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/stdenv/generic/default.nix:78:17':
while evaluating the attribute `outPath' at `/nix/store/l7ny7f17aii5qfgmadr2wcp3wan54wlp-nix-1.5.3/share/nix/corepkgs/derivation.nix:18:9':
while evaluating the builtin function `getAttr':
while evaluating the builtin function `derivationStrict':
while instantiating the derivation named `ruby-multi_json-1.7.8' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/development/interpreters/ruby/gem.nix:16:5':
while evaluating the derivation attribute `src' at `/tmp/nix-build-nixpkgs-tarball-1.0pre28245_67a46ce.drv-0/git-export/pkgs/development/interpreters/ruby/gem.nix:11:5':
while evaluating the attribute `outPath' at `/nix/store/l7ny7f17aii5qfgmadr2wcp3wan54wlp-nix-1.5.3/share/nix/corepkgs/derivation.nix:18:9':
while evaluating the builtin function `getAttr':
while evaluating the builtin function `derivationStrict':
hash `no hash' has wrong length for hash type `sha256'
[q[q[qbuild time elapsed: 0m0.038s 0m0.023s 0m20.586s 0m2.004s
builder for `/nix/store/lxmyqg7z1l71ji5vdar2m5w66dx45v20-nixpkgs-tarball-1.0pre28245_67a46ce.drv' failed with exit code 1
error: build of `/nix/store/lxmyqg7z1l71ji5vdar2m5w66dx45v20-nixpkgs-tarball-1.0pre28245_67a46ce.drv' failed
It has been submitted for inclusion in mainline, so it will probably
make it into 3.11 (or 3.12 as 3.11 is fairly close to release).
It is very local, only affecting people who use the "send" feature.
Without it, send is unstable/unsafe to use incrementally.
It can probably be applied to 3.9 and 3.8 as well, but as I only
tested it against 3.10, so I didn't bother.
The videos work, but there is a problem with sound:
ALSA lib dlmisc.c:236:(snd1_dlobj_cache_get) Cannot open shared library
/nix/store/9z51hr9l19vdhgmqd60jwwrg6ny5md2d-alsa-plugins-1.0.26/lib/alsa-lib/libasound_module_pcm_pulse.so
It tries to open a 64bit plugin, which obviously fails. I think this depends on
/etc/asound.conf, but I'm not sure how to fix it.
Regardless of the problem, in one computer I tried the sound works but other
apps cannot output sound. In another, the sound doesn't work and other apps
continue working as normal.
It turns out that the .deb only contains the changelog and some other docs.
Revert back to using the i686 version, but keep the double url for the future.
