Mason offline

[smprather]

It's the offline guy again 🙂. I have a setup where one machine is online, and it shares a filesystem mount with my offline environment. The online machine mounts the fs rw, offline machine mounts it readonly. I'm trying to stop all plugins from attempting internet access, which are causing costly poll timeouts. I bounce in and out of nvim all day long. Startup time is super critical for me.

I share the same nvim config between the two using symlinks to the shared filesystem, including ~/.local/share/nvim.

I have Mason configured like this for offline.

{ "mason-org/mason.nvim", enabled = true, opts = { ui = { check_outdated_packages_on_open = false } } },

When I enable Mason and do this (just a :q<ENTER> once in nvim):

$ strace -f -t nvim  2> ~/foo
$ grep Timeout ~/foo | wc -l

I get

• 41 'Timeout's when Mason is enabled
• 0 when it's disabled.

I can't disable Mason since it's intertwined with LSP config (Kickstart-based config). I tried detangling it, no luck.

    {
        -- Main LSP Configuration
        "neovim/nvim-lspconfig",
        enabled = true,
        dependencies = {
            -- Automatically install LSPs and related tools to stdpath for Neovim
            -- Mason must be loaded before its dependents so we need to set it up here.
            -- NOTE: `opts = {}` is the same as calling `require('mason').setup({})`
            { "mason-org/mason.nvim", enabled = true, opts = { ui = { check_outdated_packages_on_open = false } } },
            { "mason-org/mason-lspconfig.nvim", enabled = true },
            { "WhoIsSethDaniel/mason-tool-installer.nvim", enabled = true },
...
            require("mason-tool-installer").setup({ ensure_installed = ensure_installed, auto_update = false })

The timeouts generally look like this. I don't know where 66.33.60.66 is coming from.

10:41:02 connect(4, {sa_family=AF_INET, sin_port=htons(443), sin_addr=inet_addr("66.33.60.66")}, 16) = -1 EINPROGRESS (Operation now in progress)  
10:41:02 close(3)                       = 0  
10:41:02 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0  
10:41:02 poll([{fd=4, events=POLLOUT}], 1, 1000) = 0 (Timeout)  
10:41:03 poll(NULL, 0, 1000)            = 0 (Timeout)  
10:41:04 rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, 8) = 0  
10:41:04 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0  
10:41:04 poll([{fd=4, events=POLLOUT|POLLWRNORM}], 1, 0) = 0 (Timeout)  
10:41:04 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0  
10:41:04 poll([{fd=4, events=POLLOUT}], 1, 1000) = 0 (Timeout)  
10:41:05 poll(NULL, 0, 1000)            = 0 (Timeout)  
10:41:06 rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, 8) = 0                                                                                                                                                                                 
10:41:06 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:06 poll([{fd=4, events=POLLOUT|POLLWRNORM}], 1, 0) = 0 (Timeout)                                                                                                                                                                                                                                                         
10:41:06 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:06 poll([{fd=4, events=POLLOUT}], 1, 1000) = 0 (Timeout)                                                                                                                                                                                                                                                                 
10:41:07 poll(NULL, 0, 1000)            = 0 (Timeout)                                                                                                                                                                                                                                                                          
10:41:08 rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, 8) = 0                                                                                                                                                                                 
10:41:08 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:08 poll([{fd=4, events=POLLOUT|POLLWRNORM}], 1, 0) = 0 (Timeout)                                                                                                                                                                                                                                                         
10:41:08 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:08 poll([{fd=4, events=POLLOUT}], 1, 1000) = 0 (Timeout)                                                                                                                                                                                                                                                                 
10:41:09 poll(NULL, 0, 487)             = 0 (Timeout)                                                                                                                                                                                                                                                                          
10:41:10 rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, 8) = 0                                                                                                                                                                                 
10:41:10 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:10 poll([{fd=4, events=POLLOUT|POLLWRNORM}], 1, 0) = 0 (Timeout)                                                                                                                                                                                                                                                         
10:41:10 close(4)                       = 0                                                                                                                                                                                                                                                                                    
10:41:10 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:10 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fa1a5dded20}, NULL, 8) = 0                                                                                                                                                                                 
10:41:10 write(2, "c", 1)               = -1 EPIPE (Broken pipe)                                                                                                                                                                                                                                                               
10:41:10 --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=55601, si_uid=291727} ---                                                         

How can I stop Mason from attempting all internet access? Thanks!!

[henry-hsieh]

Mason won't access internet when you are not opening the Mason UI. You should disable run_on_start option of mason-tool-installer. If you are using lazy.nvim as plugin manager. You can lazy-load on commands of mason-tool-installer.

[smprather]

I decided to go ahead and get out of Mason and LspConfig (now that nvim has a native lsp configuration interface). My setup is just too niche to get broad support for. I'm actually surprised there aren't more people forced into offline environments for work. But try as I may, I can't get plugin authors on board for this work flow. Online has become a baseline assumption for the community.

Thanks Henry!

[henry-hsieh]

You're welcome.

I also have to work in the offline environment. If you still interest, you can see my configs of the Mason. Actually, they have no big difference between the online and the offline environment. The most annoying part is not network access, but some plugins generate absolute paths in the scripts. Therefore, you have to deal with these absolute paths when you want to bring the environment from online to offline. Even for the Mason v2 supporting relative path, there still some absolute paths generated by Mason. See #1932.