diff --git a/lua/config/nvim-dap.lua b/lua/config/nvim-dap.lua
index 30ef6e4..f958454 100644
--- a/lua/config/nvim-dap.lua
+++ b/lua/config/nvim-dap.lua
@@ -28,29 +28,23 @@ vim.fn.execute("nnoremap <silent> <leader>dr :lua require'dap'.repl.open()<CR>")
 
 local utils = require("utils")
 
-M = {}
+local M = {}
 
 local env_ok = false
 local dap = nil
 
 local function check_env()
-    local debugpy = utils.exec("python -m debugpy --version")
-    assert(debugpy.rc == 0, "Python module debugpy is required")
+    utils.assert_available("python3")
+    utils.assert_python3_module("debugpy")
     env_ok = true
 end
 
-local function load_dap()
-    local ok, p = pcall(require, "dap")
-    assert(ok, "nvim-dap is required")
-    return p
-end
-
 local function start(config)
     if not env_ok then
         check_env()
     end
     if not dap then
-        dap = load_dap()
+        dap = require("dap")
         dap.adapters.python = {
             type = "executable",
             command = "python",
diff --git a/lua/pytest.lua b/lua/pytest.lua
index 41157eb..7cb4746 100644
--- a/lua/pytest.lua
+++ b/lua/pytest.lua
@@ -16,35 +16,29 @@
 
 local utils = require("utils")
 
-M = {}
+local M = {}
 
 local env_ok = false
 local dap = nil
 
 local function check_env()
-    local debugpy = utils.exec("python -m debugpy --version")
-    assert(debugpy.rc == 0, "Python module debugpy is required")
-    local pytest = utils.exec("python -m pytest --version")
-    assert(pytest.rc == 0, "Python module pytest is required")
+    utils.exec("Asdf")
+    utils.assert_available("python3")
+    utils.assert_python3_module("debugpy")
+    utils.assert_python3_module("pytest")
     env_ok = true
 end
 
-local function load_dap()
-    local ok, dap = pcall(require, "dap")
-    assert(ok, "nvim-dap is required")
-    return dap
-end
-
 function M.run(args)
     assert(type(args) == "table", "Args not specified or of wrong type")
     if not env_ok then
         check_env()
     end
     if not dap then
-        dap = load_dap()
+        dap = require("dap")
         dap.adapters.python = {
             type = "executable",
-            command = "python",
+            command = "python3",
             args = { "-m", "debugpy.adapter", },
             cwd = vim.fn.getcwd(),
         }
diff --git a/lua/utils.lua b/lua/utils.lua
index d492dfe..835f681 100644
--- a/lua/utils.lua
+++ b/lua/utils.lua
@@ -14,37 +14,10 @@
     limitations under the License.
 ]]
 
-M = {}
+local M = {}
 
 M.os_name = vim.loop.os_uname().sysname
 
-function M.has_value(tab, val)
-    for _, value in ipairs(tab) do if value == val then return true end end
-
-    return false
-end
-
----@param cmd table: Array of executable + args
-function M.exec(cmd)
-    local out = vim.fn.system(cmd)
-    local rc = vim.v.shell_error
-
-    return { out = out, rc = rc, }
-end
-
-function M.get_color(group, attr)
-    return vim.fn.synIDattr(vim.fn.synIDtrans(vim.fn.hlID(group)), attr)
-end
-
-function M.get_hl(name)
-    local ok, hl = pcall(vim.api.nvim_get_hl_by_name, name, true)
-    if not ok then return end
-    for _, key in pairs({ "foreground", "background", "special", }) do
-        if hl[key] then hl[key] = string.format("#%06x", hl[key]) end
-    end
-    return hl
-end
-
 --- Check that an executable is available
 --- @param exe string: Array to look for
 --- @return boolean
@@ -83,4 +56,13 @@ function M.assert_any_available(exes)
     end
 end
 
+--- Asserts that a python module is installed
+---@param mod string: The python module to check
+function M.assert_python3_module(mod)
+    local resp = vim.system({ "python3", "-m", "pip", "show", mod, }):wait()
+    if not resp.code == 0 then
+        error("Python3 module " .. mod .. " not installed:\n" .. resp.stdout .. "\n" .. resp.stderr)
+    end
+end
+
 return M