dbuenzli

(*---------------------------------------------------------------------------
   Copyright (c) 2017 Daniel C. Bünzli. All rights reserved.
   Distributed under the ISC license, see terms at the end of the file.
   %%NAME%% %%VERSION%%
  ---------------------------------------------------------------------------*)

open Gg
open Vg
open React
open Useri

dbuenzli

There is one issue that bazaars, library operating systems like MirageOS or random left-padists face: how to scale extreme software modularization. Scaling not from a software composition perspective; this could be readily solved by using the type system and the functional programming techniques everyone's heard about. But scaling from a purely bureaucratic point of view.

The bureaucracy of making sure main issues are being taken care of. The bureaucracy of making sure changes to the software are being clearly communicated to dependents. The bureaucracy of making sure the software

dbuenzli

let delete ?(must_exist = false) ~contents d =
  let err d msg =
    raise_notrace (Failure (strf "delete %a: %s" B0_fpath.pp d msg))
  in
  let try_unlink file = match Unix.unlink (B0_fpath.to_string file) with
  | () -> true
  | exception Unix.Unix_error (e, _, _) ->
      match e with
      | Unix.ENOENT -> true
      | Unix.EISDIR (* Linux *) | Unix.EPERM (* POSIX *) -> false

dbuenzli

From opam 1.2.2 to 2.0.0 and back with homebrew on macOS

With these instructions you can try 2.0.0 for your day to day work but quickly and safely go back to 1.2.2 if you hit a wall. This maintains both setup entirely isolated.

Going to 2.0.0 for the first time:

> mv ~/.opam ~/.opam-v1 # Save your old setup, use cp -r if you want

dbuenzli

This has been integrated in the README of ocaml-depext.

See https://github.com/ocaml/opam-depext/blob/master/README.md

dbuenzli

  (* See http://erratique.ch/software/uutf/doc/Uutf.String.UTF_8.html
     
     If you want to test the API use:
     opam pin add uutf https://github.com/dbuenzli/uutf.git#string-utf-8 *)
  
  
  (** UTF-8 encoded strings.

      The [UTF_8] module provides a {{!t}datatype} that asserts
      that a string value is valid UTF-8 and a few functions

dbuenzli

Switch creation and initialization in opam v2.

The first point for me is that we should as much as possible get to a system where the following basic sequences of steps are possible.

opam switch create bla               # Create switch
opam install non-ocaml-pkg           # Doesn't depend on ocaml
opam install ocaml.V.VV.V+variant

or

dbuenzli

# Download vagrant box for Windows 10 from:
#
#   https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/
#
# Unzip and add with:
#
#   vagrant box add --name win10 MSEdge\ -\ Win10.box
#
# During the first `vagrant up` need to connect to vm UI to do this:
#

dbuenzli

opam-version: "2.0"
synopsis: "Build environment"
maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
authors:[]
build:[[ "env" ]]

dbuenzli

opam-version: "2.0"
synopsis: "Build setenv"
maintainer: "Daniel Bünzli <daniel.buenzl i@erratique.ch>"
setenv: [[BLA += "BLA"]]
authors:[]
build:[[ "env" ]]