nixpkgs/pkgs/development/tools/build-managers/rebar3/hermetic-bootstrap.patch

diff --git a/bootstrap b/bootstrap
index 35759b0..939c838 100755
--- a/bootstrap
+++ b/bootstrap
@@ -7,9 +7,11 @@ main(_) ->
     application:start(asn1),
     application:start(public_key),
     application:start(ssl),
-    inets:start(),
-    inets:start(httpc, [{profile, rebar}]),
-    set_httpc_options(),
+    %%  Removed for hermeticity on Nix
+    %%
+    %%  inets:start(),
+    %%  inets:start(httpc, [{profile, rebar}]),
+    %%    set_httpc_options(),

     %% Fetch and build deps required to build rebar3
     BaseDeps = [{providers, []}
@@ -74,12 +76,12 @@ default_registry_file() ->
     filename:join([CacheDir, "hex", "default", "registry"]).

 fetch_and_compile({Name, ErlFirstFiles}, Deps) ->
-    case lists:keyfind(Name, 1, Deps) of
-        {Name, Vsn} ->
-            ok = fetch({pkg, atom_to_binary(Name, utf8), list_to_binary(Vsn)}, Name);
-        {Name, _, Source} ->
-            ok = fetch(Source, Name)
-    end,
+    %% case lists:keyfind(Name, 1, Deps) of
+    %%     {Name, Vsn} ->
+    %%         ok = fetch({pkg, atom_to_binary(Name, utf8), list_to_binary(Vsn)}, Name);
+    %%     {Name, _, Source} ->
+    %%         ok = fetch(Source, Name)
+    %% end,

     %% Hack: erlware_commons depends on a .script file to check if it is being built with
     %% rebar2 or rebar3. But since rebar3 isn't built yet it can't get the vsn with get_key.
@@ -88,63 +90,63 @@ fetch_and_compile({Name, ErlFirstFiles}, Deps) ->

     compile(Name, ErlFirstFiles).

-fetch({pkg, Name, Vsn}, App) ->
-    Dir = filename:join([filename:absname("_build/default/lib/"), App]),
-    case filelib:is_dir(Dir) of
-        false ->
-            CDN = "https://s3.amazonaws.com/s3.hex.pm/tarballs",
-            Package = binary_to_list(<<Name/binary, "-", Vsn/binary, ".tar">>),
-            Url = string:join([CDN, Package], "/"),
-            case request(Url) of
-                {ok, Binary} ->
-                    {ok, Contents} = extract(Binary),
-                    ok = erl_tar:extract({binary, Contents}, [{cwd, Dir}, compressed]);
-                _ ->
-                    io:format("Error: Unable to fetch package ~p ~p~n", [Name, Vsn])
-            end;
-        true ->
-            io:format("Dependency ~s already exists~n", [Name])
-    end.
-
-extract(Binary) ->
-    {ok, Files} = erl_tar:extract({binary, Binary}, [memory]),
-    {"contents.tar.gz", Contents} = lists:keyfind("contents.tar.gz", 1, Files),
-    {ok, Contents}.
-
-request(Url) ->
-    case httpc:request(get, {Url, []},
-                       [{relaxed, true}],
-                       [{body_format, binary}],
-                       rebar) of
-        {ok, {{_Version, 200, _Reason}, _Headers, Body}} ->
-            {ok, Body};
-        Error ->
-            Error
-    end.
-
-get_rebar_config() ->
-    {ok, [[Home]]} = init:get_argument(home),
-    ConfDir = filename:join(Home, ".config/rebar3"),
-    case file:consult(filename:join(ConfDir, "rebar.config")) of
-        {ok, Config} ->
-            Config;
-        _ ->
-            []
-    end.
-
-get_http_vars(Scheme) ->
-    proplists:get_value(Scheme, get_rebar_config(), []).
-
-set_httpc_options() ->
-    set_httpc_options(https_proxy, get_http_vars(https_proxy)),
-    set_httpc_options(proxy, get_http_vars(http_proxy)).
-
-set_httpc_options(_, []) ->
-    ok;
-
-set_httpc_options(Scheme, Proxy) ->
-    {ok, {_, _, Host, Port, _, _}} = http_uri:parse(Proxy),
-    httpc:set_options([{Scheme, {{Host, Port}, []}}], rebar).
+%% fetch({pkg, Name, Vsn}, App) ->
+%%     Dir = filename:join([filename:absname("_build/default/lib/"), App]),
+%%     case filelib:is_dir(Dir) of
+%%         false ->
+%%             CDN = "https://s3.amazonaws.com/s3.hex.pm/tarballs",
+%%             Package = binary_to_list(<<Name/binary, "-", Vsn/binary, ".tar">>),
+%%             Url = string:join([CDN, Package], "/"),
+%%             case request(Url) of
+%%                 {ok, Binary} ->
+%%                     {ok, Contents} = extract(Binary),
+%%                     ok = erl_tar:extract({binary, Contents}, [{cwd, Dir}, compressed]);
+%%                 _ ->
+%%                     io:format("Error: Unable to fetch package ~p ~p~n", [Name, Vsn])
+%%             end;
+%%         true ->
+%%             io:format("Dependency ~s already exists~n", [Name])
+%%     end.
+
+%% extract(Binary) ->
+%%     {ok, Files} = erl_tar:extract({binary, Binary}, [memory]),
+%%     {"contents.tar.gz", Contents} = lists:keyfind("contents.tar.gz", 1, Files),
+%%     {ok, Contents}.
+
+%% request(Url) ->
+%%     case httpc:request(get, {Url, []},
+%%                        [{relaxed, true}],
+%%                        [{body_format, binary}],
+%%                        rebar) of
+%%         {ok, {{_Version, 200, _Reason}, _Headers, Body}} ->
+%%             {ok, Body};
+%%         Error ->
+%%             Error
+%%     end.
+
+%% get_rebar_config() ->
+%%     {ok, [[Home]]} = init:get_argument(home),
+%%     ConfDir = filename:join(Home, ".config/rebar3"),
+%%     case file:consult(filename:join(ConfDir, "rebar.config")) of
+%%         {ok, Config} ->
+%%             Config;
+%%         _ ->
+%%             []
+%%     end.
+
+%% get_http_vars(Scheme) ->
+%%     proplists:get_value(Scheme, get_rebar_config(), []).
+
+%% set_httpc_options() ->
+%%     set_httpc_options(https_proxy, get_http_vars(https_proxy)),
+%%     set_httpc_options(proxy, get_http_vars(http_proxy)).
+
+%% set_httpc_options(_, []) ->
+%%     ok;
+
+%% set_httpc_options(Scheme, Proxy) ->
+%%     {ok, {_, _, Host, Port, _, _}} = http_uri:parse(Proxy),
+%%     httpc:set_options([{Scheme, {{Host, Port}, []}}], rebar).

 compile(App, FirstFiles) ->
     Dir = filename:join(filename:absname("_build/default/lib/"), App),