blob: d43c60f52c4d7ec6c9044c057d99bcd216b13e82 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
defmodule Mix.Hex do
@moduledoc false
@compile {:no_warn_undefined, Hex}
@hex_requirement ">= 0.19.0"
@hex_mirror "https://repo.hex.pm"
@doc """
Returns `true` if `Hex` is loaded or installed.
Otherwise returns `false`.
"""
@spec ensure_installed?(boolean) :: boolean
def ensure_installed?(force?) do
cond do
Code.ensure_loaded?(Hex) -> true
force? or install_hex?() -> Mix.Tasks.Local.Hex.run(["--force"])
true -> false
end
end
defp install_hex? do
shell = Mix.shell()
shell.info("Mix requires the Hex package manager to fetch dependencies")
shell.yes?(
"Shall I install Hex? (if running non-interactively, use \"mix local.hex --force\")"
)
end
@doc """
Returns `true` if it has the required `Hex`. If an update is performed, it then exits.
Otherwise returns `false` without updating anything.
"""
@spec ensure_updated?() :: boolean
def ensure_updated?() do
cond do
not Code.ensure_loaded?(Hex) ->
false
not Version.match?(Hex.version(), @hex_requirement) ->
Mix.shell().info("Mix requires Hex #{@hex_requirement} but you have #{Hex.version()}")
if Mix.shell().yes?("Shall I abort the current command and update Hex?") do
Mix.Tasks.Local.Hex.run(["--force"])
exit({:shutdown, 0})
end
false
true ->
true
end
end
@doc """
Ensures `Hex` is started.
"""
def start do
try do
Hex.start()
catch
kind, reason ->
Mix.shell().error(
"Could not start Hex. Try fetching a new version with " <>
"\"mix local.hex\" or uninstalling it with \"mix archive.uninstall hex.ez\""
)
:erlang.raise(kind, reason, __STACKTRACE__)
end
end
@doc """
Returns the URL to the Hex mirror.
"""
def mirror do
System.get_env("HEX_MIRROR") || @hex_mirror
end
end
|
