Having socket-activated epmd means that there always be only a single
instance managed centrally. Because Erlang also starts it
automatically if not available, and in worst case scenario 'epmd' can
be started by some Erlang application running under systemd. And then
restarting this application unit will cause complete loss of names in
'epmd' (if other Erlang system are also installed on this host).
E.g. see at which lengths RabbitMQ goes to recover from such
situations:
7741b37b1e/src/rabbit_epmd_monitor.erl (L36)
Having the only one socket-activated epmd completely solves this
problem.
That way 'epmd' can be started by systemd using socket
activation. This is important to have when there is more than one
Erlang system used on the same host.
Support for this exists since 17.0:
b7c95eabf6
Configure flag was added in 17.1:
12cd5e5b39
This reverts commit 25c42e7736d0507fd23fb5375a9282f528cc843f.
This commit is still causing evaluation errors (despite passing
OfBorg!)
Here is the current error:
error: undefined variable 'Log4Perl' at
/nix/store/n0gwyv3mcvm3hc9jrmkxjhmsrdjqzcqb-source/maintainers/scripts/nix-generate-from-cpan.nix:7:71
More investigation is needed
/cc @volth
Bazel either reuses the `PATH` from the client, or sets a hardcoded
one. The former mode in problematic for build hermeticity. But the
latter is crippled on NixOS, because the hardcoded value is
`/bin:/usr/bin`. So we set the hardcoded value to match what
`customBash` provides. This has the effect of aligning the
environments for `ctx.actions.run` and `ctx.actions.run_shell`, which
were previously distinct (bug).
76999cc40e6 changed some hashes resulting in this PR being technically
a mass rebuild. To avoid this, I am restoring some of the hashes (even
though it seems silly). My main goal is to get this PR merged quickly
as treewide changes like this get out-of-date quickly.
This commit should be reverted on the next mass rebuild.
otherwise we get this error on evaluation:
derivation 'lollypop-portal' has invalid meta attribute 'override'
derivation 'lollypop-portal' has invalid meta attribute 'overrideDerivation'
This makes the command ‘nix-env -qa -f. --arg config '{skipAliases =
true;}'’ work in Nixpkgs.
Misc...
- qtikz: use libsForQt5.callPackage
This ensures we get the right poppler.
- rewrites:
docbook5_xsl -> docbook_xsl_ns
docbook_xml_xslt -> docbook_xsl
diffpdf: fixup
According to the current convention python packages should live in
`pkgs/development/python-modules`. As I altered the `graphite_api`
expression previously in d3d1b888737 I decided to move it as well.
Additionally I applied some minor refactorings:
* use `fetchFromGitHub` instead of `fetchgit`.
* use `checkInputs` for test dependencies
* got rid of fixed points
* applied patch which supports flask-caching to 1.3.1 using `git apply
-3`
