Arch Linux User Repository

Now the official mercurial 5.3 package is available on the repository. Using it I tried to install tortoisehg, and the makepkg give me the following error:

==> Starting package()... Traceback (most recent call last): File "setup.py", line 29, in <module> from i18n.msgfmt import Msgfmt File "/home/toni/.cache/pacaur/tortoisehg/src/tortoisehg-thg-fb9035853199/i18n/msgfmt.py", line 39, in <module> from mercurial import ( ModuleNotFoundError: No module named 'mercurial' ==> ERROR: A failure occurred in package().

Has anyone solved this problem? Thank you very much.

@j77h the file conflicts are because you are on Python 3.7, whereas the PKGBUILD assumes Python 3.8. That will break if mercurial updates, since the two packages have conflicting files you'll be deleting them back and forth every update until you update Python.

This package would do better to work out the Python version at build time in order to delete the right conflicting files from the pkgdir. I suggested the following snippet which is used in the tortoisehg-hg package to delete the duped files:

PYTHONMINOR=$(python -c 'import sys; print(sys.version_info.minor)')
SITEPACKAGES="${pkgdir}/usr/lib/python3.${PYTHONMINOR}/site-packages"
# Remove files conflicting with Mercurial.
# https://bitbucket.org/tortoisehg/thg/issues/4629/
rm -f "${SITEPACKAGES}/hgext3rd/__init__.py" \
  "${SITEPACKAGES}/hgext3rd/__pycache__/__init__.cpython-3${PYTHONMINOR}.pyc" \
  "${SITEPACKAGES}/hgext3rd/__pycache__/__init__.cpython-3${PYTHONMINOR}.opt-1.pyc"

this might help others with the same need.

(sorry for lack of verbosity, it's very late here, but it should be self-explanatory when you try it)

mkdir pkgbld
cd pkgbld
yay -G tortoisehg
cd tortoisehg

edited PKGBUILD:

from depends=('python' 'mercurial>=5.1' 'mercurial<5.3' 'python-qscintilla-qt5' 'python-iniparse' 'qt5-svg' 'python-pyqt5')

to depends=('python' 'mercurial' 'python-qscintilla-qt5' 'python-iniparse' 'qt5-svg' 'python-pyqt5')

yay -S python-iniparse
makepkg -si

error: failed to commit transaction (conflicting files)

tortoisehg: /usr/lib/python3.7/site-packages/hgext3rd/init.py exists in filesystem (owned by mercurial-stable-hg)

tortoisehg: /usr/lib/python3.7/site-packages/hgext3rd/pycache/init.cpython-37.pyc exists in filesystem (owned by mercurial-stable-hg)

sudo rm /usr/lib/python3.7/site-packages/hgext3rd/__init__.py
sudo rm /usr/lib/python3.7/site-packages/hgext3rd/__pycache__/__init__.cpython-37.pyc

sudo pacman -U tortoisehg-5.2.0-0-any.pkg.tar.xz

I could then run tortoisehg

@j77h you can read about how to download and build (after editing their PKGBUILDs if you like) packages from the AUR without an AUR helper here:

https://wiki.archlinux.org/index.php/Arch_User_Repository#Acquire_build_files

This is assumed knowledge on the AUR since Arch doesn't include AUR helpers in its repository (i.e. people must manually build at least one AUR package before they can use the AUR). So it will be good to know it since much advice in comment threads like this will assume you're familiar (and yeah, some people will get annoyed at people who don't know).

Also what kind of AUR helper doesn't let you download PKGBUILDs for editing before installing them? That is pretty contrary to what the AUR is supposed to be. Might I recommend yay?

@chrisjbillington

"You could use mercurial-stable-hg ... need to modify this package's PKGBUILD ..."

I installed mercurial-stable-hg, and now I'm wondering how to edit PKGBUILD of tortoisehg, as these AUR helpers don't get as far as offering that possibility.

EDIT: Sorry for very n00b question; this probably answers it: https://github.com/Jguer/yay/issues/750

$ pikaur -S tortoisehg
...
tortoisehg depends on: 'mercurial>=5.2,mercurial<5.3'
 found in 'PackageSource.REPO': '{'mercurial': '5.1.2-1'}'

$ yay -S tortoisehg
...
==> Error: Could not find all required packages:
    mercurial>=5.2 (Wanted by: tortoisehg)

@chrisjbillington Thanks a lot for the detailed instructions. thg works. :-)

@vlatkoB this package indeed requires mercurial 5.2 built with Python 3. You could use mercurial-stable-hg or mercurial-hg, though those do not have version numbers that start with 5.2, since they are straight from the mercurial hg repo and not an official release. If you used them you would need to modify this package's PKGBUILD to allow any mercurial version so that it doesn't choke on that.

Another option (the one I've gone with) is to modify the mercurial PKGBUILD from the repos to install the official mercurial 5.2 release with Python 3:

cd /tmp
asp checkout mercurial
cd mercurial/trunk/
sed -i 's/5.1.2/5.2/g; s/python2/python/g; s/pkgrel=1/pkgrel=0/g' PKGBUILD
updpkgsums 
makepkg --skippgpcheck -i

updpkgsums and --skippgpcheck are essentially ignoring the pkgsums and PGP signatures of the downloaded tarball, so feel free to verify the sha256 of the tarball yourself, though since the source is downloaded from mercurial-scm.org over HTTPS I wouldn't be too worried.

Using a modified mercurial from the repos has the benefit that when a version higher than than 5.2-0 becomes available in the repos, you won't have to change anything to get the update.

How do you install it? It has a dep on mercurial 5.2.

@mjacob thanks! I'm using that and all your other changes. Much appreciated!

@chrisjbillington

A patch to replace all uses of cgi.escape was committed. Python 3.8 is now supported without further patches.