Mercurial Fetcher and AUTOREV - mercurial

Question

I'm trying to get a bitbake file to pull down the latest revision of a mercurial repo when it builds. It's unfortunately undocumented (https://www.yoctoproject.org/docs/1.6/bitbake-user-manual/bitbake-user-manual.html#auto-revisions), though there are a few mailing list posts on the topic. None of my attempts to recreate their methods have panned out.
This is what the .bb file looks like:
###############################################################################
# Variables for locations.
###############################################################################
SRC_URI = "hg://foo//bar/foobar/test;rev=${SRCREV};protocol=ssh;branch=default;module=root"
SRCREV = "${AUTOREV}"
# Sources are downloaded to an hg subdirectory when pulling a repo.
S = "${WORKDIR}/hg"
###############################################################################
# The version of the library we're going to install.
###############################################################################
# Set PV to SRCPV so bitbake knows it should always check SRC_URI for a new
# version of the application.
PV = "${SRCPV}"
PR = "r0"
PE = "1"
And here's the relevant part of the output error:
/usr/bin/env hg up -C -r AUTOINC
| DEBUG: Python function base_do_unpack finished
| DEBUG: Python function do_unpack finished
| ERROR: Function failed: Fetcher failure: Fetch command failed with exit code 255, output:
| abort: unknown revision 'AUTOINC'!
|
NOTE: recipe test-1_AUTOINC+AUTOINC-r0: task do_unpack: Failed
DEBUG: Teardown for bitbake-worker
NOTE: Tasks Summary: Attempted 361 tasks of which 359 didn't need to be rerun and 1 failed.
Summary: 1 task failed:
/home/intern/git/poky/meta/recipes-core/test/test_0.0.1.bb, do_unpack
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
The problem seems to be that AUTOREV is resolving to AUTOINC instead of a hash number. Any thoughts on what I can change to fix this?

Answer 1

You can use "tip" as source revision like:
SRCREV = "tip"
SRCMODULE = "myapp"
SRC_URI = "hg://hg_server_url;rev=${SRCREV};protocol=http;branch=${SRCBRANCH};module=${SRCMODULE}"
Keep only in mind (found that hard way) that hg_server_url shouldn't include target repo subname, but include it as SRCMODULE !