From f8179800d0eccaef960442a7e65b1e305f3a96d5 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Mon, 19 Oct 2015 18:46:21 -0200
Subject: Support "luajit" as a provided dependency in rockspec format 3.0

---
 src/luarocks/cfg.lua   |  6 ++++--
 src/luarocks/deps.lua  | 22 +++++++++++++---------
 src/luarocks/fetch.lua |  5 +++++
 3 files changed, 22 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/luarocks/cfg.lua b/src/luarocks/cfg.lua
index 3b7f9c37..a4f60f55 100644
--- a/src/luarocks/cfg.lua
+++ b/src/luarocks/cfg.lua
@@ -371,7 +371,8 @@ local defaults = {
       include = "include"
    },
 
-   rocks_provided = {}
+   rocks_provided = {},
+   rocks_provided_3_0 = {},
 }
 
 if cfg.platforms.windows then
@@ -575,8 +576,8 @@ end
 if package.loaded.jit then
    -- LuaJIT
    local lj_version = package.loaded.jit.version:match("LuaJIT (.*)"):gsub("%-","")
-   --defaults.rocks_provided["luajit"] = lj_version.."-1"
    defaults.rocks_provided["luabitop"] = lj_version.."-1"
+   defaults.rocks_provided_3_0["luajit"] = lj_version.."-1"
 end
 
 -- Use defaults:
@@ -593,6 +594,7 @@ for _, entry in ipairs({"variables", "rocks_provided"}) do
       end
    end
 end
+setmetatable(defaults.rocks_provided_3_0, { __index = cfg.rocks_provided })
 
 -- For values not set in the config file, use values from the 'defaults' table.
 local cfg_mt = {
diff --git a/src/luarocks/deps.lua b/src/luarocks/deps.lua
index f6c86d1c..3f7eb4d2 100644
--- a/src/luarocks/deps.lua
+++ b/src/luarocks/deps.lua
@@ -327,16 +327,20 @@ end
 -- @param dep table: A dependency parsed in table format.
 -- @param blacklist table: Versions that can't be accepted. Table where keys
 -- are program versions and values are 'true'.
+-- @param provided table: A table of auto-dependencies provided 
+-- by this Lua implementation for the given dependency.
 -- @return table or nil: A table containing fields 'name' and 'version'
 -- representing an installed rock which matches the given dependency,
 -- or nil if it could not be matched.
-local function match_dep(dep, blacklist, deps_mode)
+local function match_dep(dep, blacklist, deps_mode, rocks_provided)
    assert(type(dep) == "table")
-
-   local versions = cfg.rocks_provided[dep.name]
-   if cfg.rocks_provided[dep.name] then
+   assert(type(rocks_provided) == "table")
+  
+   local versions
+   local provided = rocks_provided[dep.name]
+   if provided then
       -- provided rocks have higher priority than manifest's rocks
-      versions = { cfg.rocks_provided[dep.name] }
+      versions = { provided }
    else
       versions = manif_core.get_versions(dep.name, deps_mode)
    end
@@ -388,9 +392,9 @@ function deps.match_deps(rockspec, blacklist, deps_mode)
    local matched, missing, no_upgrade = {}, {}, {}
    
    for _, dep in ipairs(rockspec.dependencies) do
-      local found = match_dep(dep, blacklist and blacklist[dep.name] or nil, deps_mode)
+      local found = match_dep(dep, blacklist and blacklist[dep.name] or nil, deps_mode, rockspec.rocks_provided)
       if found then
-         if not cfg.rocks_provided[dep.name] then
+         if not rockspec.rocks_provided[dep.name] then
             matched[dep] = found
          end
       else
@@ -488,7 +492,7 @@ function deps.fulfill_dependencies(rockspec, deps_mode)
 
       for _, dep in pairs(missing) do
          -- Double-check in case dependency was filled during recursion.
-         if not match_dep(dep, nil, deps_mode) then
+         if not match_dep(dep, nil, deps_mode, rockspec.rocks_provided) then
             local rock = search.find_suitable_rock(dep)
             if not rock then
                return nil, "Could not satisfy dependency: "..deps.show_dep(dep)
@@ -708,7 +712,7 @@ function deps.scan_deps(results, missing, manifest, name, version, deps_mode)
       end
       dependencies_name[version] = rockspec.dependencies
    else
-      rockspec = { dependencies = deplist }
+      rockspec = { dependencies = deplist, rocks_provided = {} }
    end
    local matched, failures = deps.match_deps(rockspec, nil, deps_mode)
    results[name] = results
diff --git a/src/luarocks/fetch.lua b/src/luarocks/fetch.lua
index 5ae05826..e1cad11b 100644
--- a/src/luarocks/fetch.lua
+++ b/src/luarocks/fetch.lua
@@ -252,6 +252,11 @@ function fetch.load_local_rockspec(filename, quick)
                                 and (fetch.is_basic_protocol(protocol) and "." or base)
                                 or  ".") )
                       or base
+
+   rockspec.rocks_provided = (deps.format_is_at_least(rockspec, "3.0")
+                              and cfg.rocks_provided_3_0
+                              or  cfg.rocks_provided)
+
    if rockspec.dependencies then
       for i = 1, #rockspec.dependencies do
          local parsed, err = deps.parse_dep(rockspec.dependencies[i])
-- 
cgit v1.2.3-55-g6feb