06:08 <gjaldon> In Irmin, is Irmin.View.diff a way to get a list of diffs between two commits?

09:46 <hannes> mato: I'll (hopefully) find some time today to look into the mirage-solo5 topkg'ing

09:55 <mato1> hannes: thanks! I've almost got the automated test bits in the state I want.

09:56 <hannes> mato1: nice... and it seems my server will be delivered today (but will need to be assembled and transported a bit.. not sure when it'll have IP)

09:57 <mato1> hannes: if we could figure out some (secure) way to run the automated tests on it that would be awesome. unfortunately bhyve as it stands today requires root which is a bit annoying.

09:57 <mato1> hannes: (unlike kvm which just requires access to /dev/kvm for whichever user)

09:58 <hannes> mato1: there has been somewhere AFAIK a patch to get rid of root..

09:58 <hannes> mato1: otherwise, I suspect a unix domain socket which ends in a root process being able to exec bhyve would be fine

10:00 <hannes> I also got some help from samoht for setting up datakit-ci without the docker and github bridge parts... looks like a build system is nearly ready (still needs some code to be written, but that's fine)..

11:04 <composmin> Hi folks, Ive been trying to get my Mirage dev environment setup on a Mac using docker. but have hit the following error:

11:04 <composmin> Fatal error: # opam-version 1.2.2 (c968888614d3fdbac881d3b7b8ef32ee97839807) # os linux opam: "open" failed on /home/opam/.opam/log/command-5-5a61c5.out: Permission denied

11:04 <composmin> I wonder if somebody could point me in the right direction.

11:05 <composmin> This is from the docker build -t opam-test . of the simplest ocaml Dockerfile

11:05 <composmin> FROM ocaml/opam:ubuntu-15.10_ocaml-4.02.3 RUN opam remote add dev git://github.com/mirage/mirage-dev RUN opam depext -i mirage

11:09 <composmin> "opam remote add..." seems to be changing the ownership of /home/opam/.opam/log from opam -> root

11:10 <composmin> Which seems to mess up subsequent commands, which is easy to workaround for the small example, but harder to make work with the solo5 build environment.

11:34 <hannes> (mato1: I was refering to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213689)

12:50 <mato1> hannes: thanks for the pointer, have added myself to Cc

13:06 <hannes> mato1: as mentioned in the bug, there will likely be another solution, but for our purposes, this might be a good initial solution

16:27 <gjaldon> Anyone here I can ask about Irmin? I want to generated diffs between 2 commits. This looks promising but doesn't seem like it's a diff between 2 commits https://github.com/mirage/irmin/blob/master/lib/ir_view.mli#L42

16:29 <hannes> gjaldon: I suspect both thomas leonard and thomas gazagnaire, who know irmin more in depth, are reading the mailing list (rather than the irc channel)

16:30 <gjaldon> hannes: ahh no wonder I have no luck in catching them here. was thinking twice about posting there. is it ok to keep sending mirage-related questions to that mailing list?

16:31 <hannes> gjaldon: sure, it is the mirageos-devel mailing list with moderately low traffic. it is appreciated to post questions there... and I think the answer is: what is a commit?

16:31 <hannes> a commit is the diff... you don't diff two commits, but each commit is a diff :)

16:32 <hannes> so you've state x, commit c which lead to state x'... commit c' leads then to state x''...

16:33 <gjaldon> hannes: ahh yes. Then I guess I want a diff of diffs if that makes sense?

16:33 <hannes> no ;)

16:33 <hannes> I mean why would you want a diff of diffs?

16:35 <gjaldon> ok I guess what I want is to get the diffs introduced by each commit then so I could convert them and store them as a list of events

16:37 <gjaldon> hannes: let me rephrase that. Is there a way to get all the changes introduced by a commit in Irmin? How bout that question?

16:38 <hannes> gjaldon: yes, that is a valid question. and I think you found the answer in the API (but I've no clue how to get to that part from canopy code)

16:40 <gjaldon> hannes: yea reading the signature gives me clues as to how to use it but no idea how to get a View.t or a View.db. anyway, will try asking at the mailing list. Thanks, hannes!

22:24 <lobo> hi *. is it possible to set tags in a _tags file based on the current ocaml compiler version? like an if/else block for example. i'm trying to topkging ipaddr and i wanted to get rid of the Makefile for tests. couldn't find the answer in the ocamlbuild manual yet

22:24 <lobo> right now the makefile also has an if/else block to figure if it should use safe_string for the tests, based on the compiler version

22:33 <hannes> lobo: not afaik. two options: always use safe_string (and get rid of ancient ocaml compilers), or don't use safe_string for tests (in _tags: "<foo>: -safe_string " will disable safe_string for foo)

22:33 <hannes> I'd go for not supporting OCaml <= 4.01 anymore, since it is likely MirageOS will move to 4.03+ anyways with the 3 release

22:37 <lobo> hannes: thx. the oasis generated _tags did set it by default anyway. we can disable it later on for tests if some of the ci tools complain

22:39 <hannes> lobo: SGTM