diff --git a/build.zig b/build.zig
index e2e6605..924e245 100644
--- a/build.zig
+++ b/build.zig
@@ -72,6 +72,9 @@ pub fn build(b: *std.Build) !void {
         .use_llvm = true,
     });
 
+    const ly_core = b.dependency("ly_core", .{ .target = target, .optimize = optimize });
+    exe.root_module.addImport("ly-core", ly_core.module("ly-core"));
+
     const zigini = b.dependency("zigini", .{ .target = target, .optimize = optimize });
     exe.root_module.addImport("zigini", zigini.module("zigini"));
 
diff --git a/build.zig.zon b/build.zig.zon
index 0c61dd9..fc1349d 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -4,6 +4,9 @@
     .fingerprint = 0xa148ffcc5dc2cb59,
     .minimum_zig_version = "0.15.0",
     .dependencies = .{
+        .ly_core = .{
+            .path = "ly-core",
+        },
         .clap = .{
             .url = "git+https://github.com/Hejsil/zig-clap#5289e0753cd274d65344bef1c114284c633536ea",
             .hash = "clap-0.11.0-oBajB-HnAQDPCKYzwF7rO3qDFwRcD39Q0DALlTSz5H7e",
diff --git a/ly-core/build.zig b/ly-core/build.zig
new file mode 100644
index 0000000..0fff11c
--- /dev/null
+++ b/ly-core/build.zig
@@ -0,0 +1,19 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+    const mod = b.addModule("ly-core", .{
+        .root_source_file = b.path("src/root.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const mod_tests = b.addTest(.{
+        .root_module = mod,
+    });
+    const run_mod_tests = b.addRunArtifact(mod_tests);
+
+    const test_step = b.step("test", "Run tests");
+    test_step.dependOn(&run_mod_tests.step);
+}
diff --git a/ly-core/build.zig.zon b/ly-core/build.zig.zon
new file mode 100644
index 0000000..13a7faf
--- /dev/null
+++ b/ly-core/build.zig.zon
@@ -0,0 +1,12 @@
+.{
+    .name = .ly_core,
+    .version = "1.0.0",
+    .fingerprint = 0xddda7afda795472,
+    .minimum_zig_version = "0.15.0",
+    .dependencies = .{},
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+    },
+}
diff --git a/src/LogFile.zig b/ly-core/src/LogFile.zig
similarity index 100%
rename from src/LogFile.zig
rename to ly-core/src/LogFile.zig
diff --git a/src/SharedError.zig b/ly-core/src/SharedError.zig
similarity index 100%
rename from src/SharedError.zig
rename to ly-core/src/SharedError.zig
diff --git a/src/UidRange.zig b/ly-core/src/UidRange.zig
similarity index 100%
rename from src/UidRange.zig
rename to ly-core/src/UidRange.zig
diff --git a/src/interop.zig b/ly-core/src/interop.zig
similarity index 99%
rename from src/interop.zig
rename to ly-core/src/interop.zig
index 4d52f49..5709e8a 100644
--- a/src/interop.zig
+++ b/ly-core/src/interop.zig
@@ -2,8 +2,6 @@ const std = @import("std");
 const builtin = @import("builtin");
 const UidRange = @import("UidRange.zig");
 
-pub const termbox = @import("termbox2");
-
 pub const pam = @cImport({
     @cInclude("security/pam_appl.h");
 });
diff --git a/ly-core/src/root.zig b/ly-core/src/root.zig
new file mode 100644
index 0000000..afc7ea0
--- /dev/null
+++ b/ly-core/src/root.zig
@@ -0,0 +1,4 @@
+pub const interop = @import("interop.zig");
+pub const UidRange = @import("UidRange.zig");
+pub const LogFile = @import("LogFile.zig");
+pub const SharedError = @import("SharedError.zig");
diff --git a/src/auth.zig b/src/auth.zig
index 598f759..4c885e0 100644
--- a/src/auth.zig
+++ b/src/auth.zig
@@ -1,12 +1,13 @@
 const std = @import("std");
 const build_options = @import("build_options");
 const builtin = @import("builtin");
+const ly_core = @import("ly-core");
 const Environment = @import("Environment.zig");
-const interop = @import("interop.zig");
-const SharedError = @import("SharedError.zig");
-const LogFile = @import("LogFile.zig");
 
 const Md5 = std.crypto.hash.Md5;
+const interop = ly_core.interop;
+const SharedError = ly_core.SharedError;
+const LogFile = ly_core.LogFile;
 const utmp = interop.utmp;
 const Utmp = utmp.utmpx;
 
diff --git a/src/bigclock.zig b/src/bigclock.zig
index 63aa02a..bb3617c 100644
--- a/src/bigclock.zig
+++ b/src/bigclock.zig
@@ -1,11 +1,12 @@
 const std = @import("std");
-const interop = @import("interop.zig");
+const ly_core = @import("ly-core");
 const enums = @import("enums.zig");
 const Lang = @import("bigclock/Lang.zig");
 const en = @import("bigclock/en.zig");
 const fa = @import("bigclock/fa.zig");
 const Cell = @import("tui/Cell.zig");
 
+const interop = ly_core.interop;
 const Bigclock = enums.Bigclock;
 pub const WIDTH = Lang.WIDTH;
 pub const HEIGHT = Lang.HEIGHT;
diff --git a/src/bigclock/Lang.zig b/src/bigclock/Lang.zig
index 3e3be4e..b09b552 100644
--- a/src/bigclock/Lang.zig
+++ b/src/bigclock/Lang.zig
@@ -1,10 +1,10 @@
-const interop = @import("../interop.zig");
+const ly_core = @import("ly-core");
 
 pub const WIDTH = 5;
 pub const HEIGHT = 5;
 pub const SIZE = WIDTH * HEIGHT;
 
-pub const X: u32 = if (interop.supportsUnicode()) 0x2593 else '#';
+pub const X: u32 = if (ly_core.interop.supportsUnicode()) 0x2593 else '#';
 pub const O: u32 = 0;
 
 // zig fmt: off
diff --git a/src/enums.zig b/src/enums.zig
index 337d6bf..2cec482 100644
--- a/src/enums.zig
+++ b/src/enums.zig
@@ -1,4 +1,5 @@
 const std = @import("std");
+
 pub const Animation = enum {
     none,
     doom,
diff --git a/src/main.zig b/src/main.zig
index f1d7c4a..2cae9b6 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,13 +1,13 @@
 const std = @import("std");
 const build_options = @import("build_options");
 const builtin = @import("builtin");
+const ly_core = @import("ly-core");
 const clap = @import("clap");
 const ini = @import("zigini");
 const auth = @import("auth.zig");
 const bigclock = @import("bigclock.zig");
 const enums = @import("enums.zig");
 const Environment = @import("Environment.zig");
-const interop = @import("interop.zig");
 const ColorMix = @import("animations/ColorMix.zig");
 const Doom = @import("animations/Doom.zig");
 const Dummy = @import("animations/Dummy.zig");
@@ -25,15 +25,16 @@ const Lang = @import("config/Lang.zig");
 const OldSave = @import("config/OldSave.zig");
 const SavedUsers = @import("config/SavedUsers.zig");
 const migrator = @import("config/migrator.zig");
-const SharedError = @import("SharedError.zig");
-const LogFile = @import("LogFile.zig");
-const UidRange = @import("UidRange.zig");
 
 const StringList = std.ArrayListUnmanaged([]const u8);
 const Ini = ini.Ini;
 const DisplayServer = enums.DisplayServer;
 const Entry = Environment.Entry;
-const termbox = interop.termbox;
+const interop = ly_core.interop;
+const UidRange = ly_core.UidRange;
+const LogFile = ly_core.LogFile;
+const SharedError = ly_core.SharedError;
+const termbox = TerminalBuffer.termbox;
 const temporary_allocator = std.heap.page_allocator;
 const ly_version_str = "Ly version " ++ build_options.version;
 
diff --git a/src/tui/Cell.zig b/src/tui/Cell.zig
index 66d06f8..6e1ca45 100644
--- a/src/tui/Cell.zig
+++ b/src/tui/Cell.zig
@@ -1,6 +1,6 @@
-const interop = @import("../interop.zig");
+const TerminalBuffer = @import("TerminalBuffer.zig");
 
-const termbox = interop.termbox;
+const termbox = TerminalBuffer.termbox;
 
 const Cell = @This();
 
diff --git a/src/tui/TerminalBuffer.zig b/src/tui/TerminalBuffer.zig
index 999dfca..dc5c69b 100644
--- a/src/tui/TerminalBuffer.zig
+++ b/src/tui/TerminalBuffer.zig
@@ -1,10 +1,12 @@
 const std = @import("std");
-const interop = @import("../interop.zig");
+const ly_core = @import("ly-core");
 const Cell = @import("Cell.zig");
 
+pub const termbox = @import("termbox2");
+
 const Random = std.Random;
 
-const termbox = interop.termbox;
+const interop = ly_core.interop;
 
 const TerminalBuffer = @This();
 
diff --git a/src/tui/components/Text.zig b/src/tui/components/Text.zig
index f205b91..25fff7c 100644
--- a/src/tui/components/Text.zig
+++ b/src/tui/components/Text.zig
@@ -1,11 +1,10 @@
 const std = @import("std");
-const interop = @import("../../interop.zig");
 const TerminalBuffer = @import("../TerminalBuffer.zig");
 
 const Allocator = std.mem.Allocator;
 const DynamicString = std.ArrayListUnmanaged(u8);
 
-const termbox = interop.termbox;
+const termbox = TerminalBuffer.termbox;
 
 const Text = @This();
 
diff --git a/src/tui/components/generic.zig b/src/tui/components/generic.zig
index 2f3c25a..004be2b 100644
--- a/src/tui/components/generic.zig
+++ b/src/tui/components/generic.zig
@@ -1,5 +1,4 @@
 const std = @import("std");
-const interop = @import("../../interop.zig");
 const TerminalBuffer = @import("../TerminalBuffer.zig");
 
 pub fn CyclableLabel(comptime ItemType: type, comptime ChangeItemType: type) type {
@@ -9,7 +8,7 @@ pub fn CyclableLabel(comptime ItemType: type, comptime ChangeItemType: type) typ
         const DrawItemFn = *const fn (*Self, ItemType, usize, usize) bool;
         const ChangeItemFn = *const fn (ItemType, ?ChangeItemType) void;
 
-        const termbox = interop.termbox;
+        const termbox = TerminalBuffer.termbox;
 
         const Self = @This();