fix: remove run key before saving the state

lua/paq.lua

@@ -14,7 +14,7 @@ local status = {
 local logpath = vim.fn.has("nvim-0.8") == 1 and vim.fn.stdpath("log") or vim.fn.stdpath("cache")
 local logfile = logpath .. "/paq.log"
 local lockfile = vim.fn.stdpath("data") .. "/paq-lock.json"
-local packages = {} -- "name" = {options...} pairs
+local packages = {}
 local lock = {}
 
 -- This is done only once. Doing it for every process seems overkill
@@ -95,9 +95,15 @@ local function lock_load()
 end
 
 local function state_write()
+    -- remove run key since can have a function in it, and
+    -- json.encode doesn't support functions
+    local pkgs = packages
+    for p, _ in pairs(pkgs) do
+        pkgs[p].run = nil
+    end
     local file = uv.fs_open(lockfile, "w", 438)
     if file then
-        local ok, result = pcall(vim.json.encode, packages)
+        local ok, result = pcall(vim.json.encode, pkgs)
         if not ok then
             error(result)
         end