Update to 1.16.0 and Zig v0.15

build.zig

@@ -2,10 +2,14 @@ const std = @import("std");
 
 pub fn build(b: *std.Build) void {
     const upstream = b.dependency("spdlog", .{});
-    const lib = b.addStaticLibrary(.{
+    const lib = b.addLibrary(.{
         .name = "spdlog",
+        .linkage = .static,
+        .root_module = b.addModule("spdlog", .{
             .target = b.standardTargetOptions(.{}),
             .optimize = b.standardOptimizeOption(.{}),
+            .link_libc = true,
+        }),
     });
     lib.linkLibCpp();
     lib.addIncludePath(upstream.path("include"));

build.zig.zon

@@ -1,12 +1,12 @@
 .{
     .name = .spdlog,
-    .version = "1.15.3",
+    .version = "1.16.0",
-    .minimum_zig_version = "0.14.0",
+    .minimum_zig_version = "0.15.0",
     .fingerprint = 0x19cef80094ea6f4,
     .dependencies = .{
         .spdlog = .{
-            .url = "https://github.com/gabime/spdlog/archive/refs/tags/v1.15.3.tar.gz",
+            .url = "https://github.com/gabime/spdlog/archive/refs/tags/v1.16.0.tar.gz",
-            .hash = "N-V-__8AAJQ8EgDzeZlwEXLTaVfJv-mmsc5kVpvmDQ7wy3Y6",
+            .hash = "N-V-__8AAP9pEgDmKW9wXR5HVBNwf_xFkTl6m0_wZn6yySIz",
         },
     },
     .paths = .{

manifest.scm

@@ -0,0 +1,5 @@
+;; What follows is a "manifest" equivalent to the command line you gave.
+;; You can store it in a file that you may then pass to any 'guix' command
+;; that accepts a '--manifest' (or '-m') option.
+
+(specifications->manifest (list "zig@0.15" "git" "zig-zls@0.15"))