6b9bcfe6fd
This is useful to use chrome's flamechart viewer.
66 lines
2.2 KiB
Nix
66 lines
2.2 KiB
Nix
{ stdenv, fetchFromGitHub, autoreconfHook, coreutils, pkgconfig
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# pyflame needs one python version per ABI
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# are currently supported
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# * 2.6 or 2.7 for 2.x ABI
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# * 3.4 or 3.5 for 3.{4,5} ABI
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# * 3.6 for 3.6+ ABI
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# if you want to disable support for some ABI, make the corresponding argument null
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, python2, python35, python36, python3
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}:
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stdenv.mkDerivation rec {
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pname = "pyflame";
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version = "1.6.7";
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src = fetchFromGitHub {
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owner = "uber";
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repo = "pyflame";
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rev = "v${version}";
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sha256 = "0hz1ryimh0w8zyxx4y8chcn54d6b02spflj5k9rcg26an2chkg2w";
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};
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nativeBuildInputs = [ autoreconfHook pkgconfig ];
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buildInputs = [ python36 python2 python35 ];
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postPatch = ''
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patchShebangs .
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# some tests will fail in the sandbox
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substituteInPlace tests/test_end_to_end.py \
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--replace 'skipif(IS_DOCKER' 'skipif(True'
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# don't use patchShebangs here to be explicit about the python version
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substituteInPlace utils/flame-chart-json \
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--replace '#!usr/bin/env python' '#!${python3.interpreter}'
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'';
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postInstall = ''
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install -D utils/flame-chart-json $out/bin/flame-chart-json
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'';
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doCheck = true;
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# reproduces the logic of their test script, but without downloading pytest
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# from the internet with pip
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checkPhase = with stdenv.lib; concatMapStringsSep "\n" (python: ''
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set -x
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PYMAJORVERSION=${head (strings.stringToCharacters python.version)} \
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PATH=${makeBinPath [ coreutils ]}\
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PYTHONPATH= \
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${python.pkgs.pytest}/bin/pytest tests/
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set +x
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'') (filter (x: x!=null) buildInputs);
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meta = with stdenv.lib; {
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description = "A ptracing profiler for Python ";
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longDescription = ''
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Pyflame is a high performance profiling tool that generates flame graphs for
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Python. Pyflame uses the Linux ptrace(2) system call to collect profiling
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information. It can take snapshots of the Python call stack without
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explicit instrumentation, meaning you can profile a program without
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modifying its source code.
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'';
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homepage = https://github.com/uber/pyflame;
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license = licenses.asl20;
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maintainers = [ maintainers.symphorien ];
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# arm: https://github.com/uber/pyflame/issues/136
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platforms = [ "i686-linux" "x86_64-linux" ];
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};
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}
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