Can we realize better nix store cache in home-manager and the container CI/CD?

[kachick]

I tried to use GitHub action cache for it ever, but less or no benefit exist in https://github.com/kachick/asdf2json/blob/1d47e12dc13689ffb7444111f075f4df9e70790b/.github/workflows/ci.yml. And reverted

NixOS/nix#9474 (comment) 👀
NixOS/nix#3183 (comment) 👀

[kachick]

https://www.haskellforall.com/2022/10/how-to-correctly-cache-build-time.html 👁️

[kachick]

At least, podman cp is slow and can't complete even in my local...

dotfiles main(12a48df)  ≡via 🐹 v1.22.1 via ❄️  impure (nix-shell-env) zsh
125! podman cp b8f6f48e342b75c53f29776a62e362ed1521a58426dfee02d96b7a68a21c2ce2:/home/user/.profile ./.profile.copied

dotfiles main(12a48df) *​ ≡via 🐹 v1.22.1 via ❄️  impure (nix-shell-env) zsh
> bat ./.profile.copied
───────┬────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       │ File: ./.profile.copied
───────┼────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
   1   │ . "/home/user/.nix-profile/etc/profile.d/hm-session-vars.sh"
   2   │
   3   │ export INPUTRC="/home/user/.inputrc"
   4   │
   5   │ # Used same method as switching to fish
   6   │ # https://wiki.archlinux.org/title/fish#Setting_fish_as_interactive_shell_only
   7   │ if [[ $(/nix/store/g1v19g0a6zs4np9ac9vxkb1mf7x1qcw9-procps-3.3.17/bin/ps --no-header --pid=$PPID --format=comm) != "zsh" && -z ${BASH_EXECUTION_STRING} ]]
   8   │ then
   9   │   shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
  10   │   exec /nix/store/w81n67bahxz0ll5avk5kdj25ridwf6y8-zsh-5.9/bin/zsh $LOGIN_OPTION
  11   │ fi
  12   │
───────┴────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

dotfiles main(12a48df) *​ ≡via 🐹 v1.22.1 via ❄️  impure (nix-shell-env) zsh
> podman cp b8f6f48e342b75c53f29776a62e362ed1521a58426dfee02d96b7a68a21c2ce2:/nix/store ./nix-store-cache.copied
Error: 2 errors occurred:
	* copying to host: copier: put: error creating "/Users/kachick/repos/dotfiles/nix-store-cache.copied/032wiarm65zp3bh9ak3dz2sqcr3n8g70-bash-interactive-5.2p26/bin": mkdir /Users/kachick/repos/dotfiles/nix-store-cache.copied/032wiarm65zp3bh9ak3dz2sqcr3n8g70-bash-interactive-5.2p26/bin: permission denied
	* copying from container: io: read/write on closed pipe

dotfiles main(12a48df) *​ ≡via 🐹 v1.22.1 2m29s via ❄️  impure (nix-shell-env) zsh
125! la ./nix-store-cache.copied
drwxr-xr-x    - kachick 12 3  23:37 .links
dr-xr-xr-x    - kachick  1 1   1970 032wiarm65zp3bh9ak3dz2sqcr3n8g70-bash-interactive-5.2p26
.r--r--r-- 2.9k kachick  1 1   1970 00hkkgnzq591sh6vb7z6v5hgngp7pvps-libselinux-3.6.tar.gz.drv
.r--r--r--  437 kachick  1 1   1970 00qr10y7z2fcvrp9b2m46710nkjvj55z-update-autotools-gnu-config-scripts.sh
.r--r--r-- 4.4k kachick  1 1   1970 00zn8nb0f5x19ckihvnk7y69l7vx2gf5-fix-implicit-getdef_bool.patch.drv
.r--r--r-- 1.5k kachick  1 1   1970 001gp43bjqzx60cg345n2slzg7131za8-nix-nss-open-files.patch
.r--r--r-- 1.8k kachick  1 1   1970 007bzydbwwn5jz86dvqb70755hvz4nq4-wait-timeout-0.2.0.drv
.r--r--r-- 2.9k kachick  1 1   1970 01fc3rmg7vnpkpsqiqrpd50pg84idfnw-Test-NoWarnings-1.06.tar.gz.drv
.r--r--r-- 2.9k kachick  1 1   1970 01jkwncca9gkjv0vzhzaa8jw15wc4964-openssl-3.0.13.tar.gz.drv
.r--r--r-- 8.8k kachick  1 1   1970 01nyy2xyv69mlfr16fz80gyn5fd7nlvw-microlens-0.4.13.1.drv
.r--r--r-- 2.9k kachick  1 1   1970 01390vsvxf4a82bnl9aa8awws7p42692-code-page-0.2.1.tar.gz.drv
.r--r--r-- 8.8k kachick  1 1   1970 02i6ky14s20bjv2nzi6ii9cwwqnnllc4-easy-file-0.2.5.drv
.r--r--r-- 2.9k kachick  1 1   1970 02v18qqbm1lc95ki7cd49ndlf5mvnmy5-yasm-1.3.0.tar.gz.drv
.r--r--r-- 3.4k kachick  1 1   1970 026bhm689m0syvgl9srwxd54dwkzkif9-source.drv

[kachick]

Thanks for your suggestion! Yes, that action was helpful if the repository has a long build time. However, in the case of this repository, the build time per package is fast. Nonetheless, using many dependencies causes rate-limit problems rather than providing benefits... 😢

[kachick]

• Realizing sounds hard for container workflows
• home-manager workflow is not a large problem now