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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file search_package.lua
--
-- imports
import("core.base.option")
import("lib.detect.find_tool")
-- search packages using modern nix search
function _search_with_flakes(nix, name)
local results = {}
-- use nix search to find packages
local searchdata = try {function ()
return os.iorunv(nix.program, {"search", "nixpkgs", name, "--json"})
end}
if searchdata then
-- parse JSON output
local ok, data = try {function ()
return json.decode(searchdata)
end}
if ok and data then
for pkgname, pkginfo in pairs(data) do
-- extract package name from the full path (e.g., "legacyPackages.x86_64-linux.cmake" -> "cmake")
local simplename = pkgname:match("([^%.]+)$")
if simplename and simplename:find(name, 1, true) then
table.insert(results, {
name = "nix::" .. simplename,
version = pkginfo.version or "unknown",
description = pkginfo.description or ""
})
end
end
end
end
return results
end
-- search packages using legacy nix-env
function _search_with_env(name)
local results = {}
local nixenv = find_tool("nix-env")
if not nixenv then
return results
end
-- use nix-env to search for packages
local searchdata = try {function ()
return os.iorunv(nixenv.program, {"-qaP", "*" .. name .. "*"})
end}
if searchdata then
-- parse nix-env output format:
-- nixpkgs.cmake cmake-3.27.7
-- nixpkgs.cmake-cursor cmake-cursor-0.2.1
-- nixpkgs.cmakeWithGui cmake-3.27.7
for _, line in ipairs(searchdata:split("\n", {plain = true})) do
line = line:trim()
if line ~= "" then
local parts = line:split("%s+", {limit = 2})
if #parts >= 2 then
local fullname = parts[1]
local version_desc = parts[2]
-- extract simple package name
local pkgname = fullname:match("nixpkgs%.(.+)")
if pkgname and pkgname:find(name, 1, true) then
-- try to separate version from description
local version = version_desc:match("^([%d%.%-]+)")
local description = version_desc:gsub("^[%d%.%-]+%s*", "")
table.insert(results, {
name = "nix::" .. pkgname,
version = version or "unknown",
description = description or ""
})
end
end
end
end
end
return results
end
-- search package using the nix package manager
--
-- @param name the package name with pattern
--
function main(name)
-- find nix
local nix = find_tool("nix")
if not nix then
raise("nix not found!")
end
-- check if we have flakes enabled (modern nix)
local hasflakes = try {function ()
return os.iorunv(nix.program, {"search", "--help"}, {stdout = os.nuldev()})
end}
local results = {}
-- try modern search first
if hasflakes then
results = try {function ()
return _search_with_flakes(nix, name)
end} or {}
end
-- fallback to legacy search if modern search failed or returned no results
if #results == 0 then
results = try {function ()
return _search_with_env(name)
end} or {}
end
-- remove duplicates and sort
local seen = {}
local unique_results = {}
for _, result in ipairs(results) do
local key = result.name
if not seen[key] then
seen[key] = true
table.insert(unique_results, result)
end
end
-- sort by package name
table.sort(unique_results, function(a, b)
return a.name < b.name
end)
return unique_results
end
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