Often you want to build the same project in different ways depending on context, whether it be development or preparing for production deployment. Or you want some dependencies only for use in certain contexts such as running tests and don't want them conflicting with regular dependencies or bother to be fetched and built when not needed.
Those are some of the reasons we've introduced profiles.
| λ ../rebar/rebar3 pkgs | |
| zeta: | |
| Versions: 0.1.1 | |
| tinymt: | |
| Versions: 0.0.9 | |
| swab: | |
| Versions: 1.0.0 |
λ ../rebar/rebar3 help release
Usage: rebar release [-n <relname>] [-v <relvsn>] [-g <goal>]
[-u <upfrom>] [-o <output_dir>] [-h] [-l <lib_dir>]
[-p <path>] [--default-libs <default_libs>]
[-V [<log_level>]] [-d <dev_mode>]
[-i <include_erts>] [-a <override>] [-c [<config>]]
[--overlay_vars <overlay_vars>]
[--sys_config <sys_config>]
[--system_libs <system_libs>] [--version]
λ ./rebar3 help compile
Usage: rebar compile [-j <jobs>]
-j, --jobs Number of concurrent workers the compiler may use. Default: 3
| #include "erl_nif.h" | |
| static ERL_NIF_TERM world(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) | |
| { | |
| return enif_make_string(env, "Hello world!", ERL_NIF_LATIN1); | |
| } | |
| static ErlNifFunc nif_funcs[] = { | |
| {"world", 0, world} | |
| }; |
| /* automatically generated by rust-bindgen */ | |
| extern crate libc; | |
| use libc::size_t; | |
| use libc::ssize_t; | |
| #[repr(C)] | |
| pub struct ErlDrvSysInfo { | |
| pub driver_major_version: ::libc::c_int, | |
| pub driver_minor_version: ::libc::c_int, | |
| pub erts_version: *mut ::libc::c_char, |
| /* automatically generated by rust-bindgen */ | |
| pub type ErlNifUInt64 = ::libc::c_ulong; | |
| pub type ErlNifSInt64 = ::libc::c_long; | |
| pub type ERL_NIF_TERM = ::libc::c_ulong; | |
| pub type ERL_NIF_UINT = ERL_NIF_TERM; | |
| pub enum Struct_enif_environment_t { } | |
| pub type ErlNifEnv = Struct_enif_environment_t; | |
| #[repr(C)] | |
| pub struct ErlNifFunc { |
| dialyzer --fullpath --plt /home/tristan/Devel/rebar/.depsolver_plt -Wno_opaque -Wrace_conditions -r ./ebin | |
| Checking whether the PLT /home/tristan/Devel/rebar/.depsolver_plt is up-to-date... yes | |
| Proceeding with analysis... | |
| dialyzer: Analysis failed with error: | |
| Could not scan the following file(s): | |
| Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_version.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_update.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_shell.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_tar.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_release.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_packages.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_new.beam Could not get core Erlang code for: /home/tristan/Devel/rebar/ebin/rebar_prv_lock.beam Could |
| 1> beam_lib:chunks("/home/tristan/Devel/rebar/ebin/rebar_prv_version.beam", [compile_info]). | |
| {ok,{rebar_prv_version, | |
| [{compile_info, | |
| [{options, | |
| [{outdir,"ebin"}, | |
| debug_info, | |
| {d,namespaced_types}, | |
| debug_info,warnings_as_errors, | |
| {i,"include"}]}, | |
| {version,"5.0.2"}, |
| my_project: | |
| {:foo, git: "https://github.com/elixir-lang/foo.git", tag: "0.1"} | |
| {:bar, git: "https://github.com/elixir-lang/bar.git", tag: "0.1"} | |
| foo 0.1: | |
| {:bar, git: "https://github.com/elixir-lang/bar.git", tag: "0.1"} | |
| foo 0.2: | |
| {:bar, git: "https://github.com/elixir-lang/bar.git", tag: "0.2"} |