64 lines
1.7 KiB
Nix
64 lines
1.7 KiB
Nix
|
# Contains the ruby version heuristics
|
||
|
|
{ lib }:
|
||
|
|
with lib;
|
||
|
|
let
|
||
|
|
# The returned set should be immutable
|
||
|
|
rubyVersion = major: minor: tiny: tail:
|
||
|
|
rec {
|
||
|
|
inherit major minor tiny tail;
|
||
|
|
|
||
|
|
# Contains the patch number "223" if tail is "p223" or null
|
||
|
|
patchLevel =
|
||
|
|
let
|
||
|
|
p = removePrefix "p" tail;
|
||
|
|
isPosInt = num:
|
||
|
|
0 == stringLength
|
||
|
|
(replaceStrings
|
||
|
|
["0" "1" "2" "3" "4" "5" "6" "7" "8" "9"]
|
||
|
|
["" "" "" "" "" "" "" "" "" "" ]
|
||
|
|
num);
|
||
|
|
in
|
||
|
|
if hasPrefix "p" tail && isPosInt p then p
|
||
|
|
else null;
|
||
|
|
|
||
|
|
# Shortcuts
|
||
|
|
majMin = "${major}.${minor}";
|
||
|
|
majMinTiny = "${major}.${minor}.${tiny}";
|
||
|
|
|
||
|
|
# Ruby separates lib and gem folders by ABI version which isn't very
|
||
|
|
# consistent.
|
||
|
|
libDir =
|
||
|
|
if versionAtLeast majMinTiny "2.1.0" then
|
||
|
|
"${majMin}.0"
|
||
|
|
else if versionAtLeast majMinTiny "2.0.0" then
|
||
|
|
"2.0.0"
|
||
|
|
else if versionAtLeast majMinTiny "1.9.1" then
|
||
|
|
"1.9.1"
|
||
|
|
else
|
||
|
|
throw "version ${majMinTiny} is not supported";
|
||
|
|
|
||
|
|
# How ruby releases are tagged on github.com/ruby/ruby
|
||
|
|
gitTag =
|
||
|
|
let
|
||
|
|
base = "v${major}_${minor}_${tiny}";
|
||
|
|
in
|
||
|
|
if patchLevel != null then
|
||
|
|
"${base}_${patchLevel}"
|
||
|
|
else
|
||
|
|
if tail != "" then
|
||
|
|
"${base}_${tail}"
|
||
|
|
else
|
||
|
|
base;
|
||
|
|
|
||
|
|
# Implements the builtins.toString interface.
|
||
|
|
__toString = self:
|
||
|
|
self.majMinTiny + (
|
||
|
|
if self.patchLevel != null then
|
||
|
|
"-p${self.patchLevel}"
|
||
|
|
else if self.tail != "" then
|
||
|
|
"-${self.tail}"
|
||
|
|
else "");
|
||
|
|
};
|
||
|
|
in
|
||
|
|
rubyVersion
|