From 0d076930d5d88e69bc7c4463b440017d816fd80c Mon Sep 17 00:00:00 2001 From: spwhitton Date: Tue, 14 Jun 2016 03:16:18 +0000 Subject: Added a comment --- ...ent_3_4466bc58fd3e69938c184c817ddbb3e6._comment | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 doc/todo/merge_request:_changes_to_Reboot.hs/comment_3_4466bc58fd3e69938c184c817ddbb3e6._comment (limited to 'doc') diff --git a/doc/todo/merge_request:_changes_to_Reboot.hs/comment_3_4466bc58fd3e69938c184c817ddbb3e6._comment b/doc/todo/merge_request:_changes_to_Reboot.hs/comment_3_4466bc58fd3e69938c184c817ddbb3e6._comment new file mode 100644 index 00000000..4fa14683 --- /dev/null +++ b/doc/todo/merge_request:_changes_to_Reboot.hs/comment_3_4466bc58fd3e69938c184c817ddbb3e6._comment @@ -0,0 +1,23 @@ +[[!comment format=mdwn + username="spwhitton" + subject="comment 3" + date="2016-06-14T03:16:18Z" + content=""" +Thanks for taking a look at my branch, and especially for fixing my inadequately-tested `readVersionMaybe`. + +`Sbuild.built` does not *require* a particular version of the kernel. It is just that the file that it generates in `/etc/schroot/chroot.d` can vary depending on the kernel version running at the time that `Sbuild.built` is first ensured. In particular, if the running kernel does not support overlayfs (as jessie's kernel doesn't), the line `union-type=overlay` will be omitted from the file in `/etc/schroot/chroot.d`. This renders `Schroot.overlaysInTmpfs` useless. + +I think it should be up to the user to apply a property like + + & Sbuild.built foo `requires` Reboot.toKernelNewerThan bar + +to individual hosts, because it depends on whether they actually care about using an overlay chroot. Perhaps on an old machine they don't intend to use overlays. In my config, I do something like this: + + & osDebian Testing \"i386\" + & Apt.stdSourcesList `onChange` (Apt.upgraded `before` Apt.cacheCleaned `before` Reboot.toKernelNewerThan \"4\") + & Sbuilt.builtFor ... + +The idea is that if I reinstall my machine from a jessie installation CD, propellor will upgrade to testing and boot to the new kernel before it builds the chroot, so I get the `union-type=overlay` line in my config. + +I could prepare a patch to add this information to the haddock of Sbuild.hs? +"""]] -- cgit v1.2.3