forked from hacc/haccfiles
51 lines
2.5 KiB
Org Mode
51 lines
2.5 KiB
Org Mode
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#+TITLE: Pluto standalone
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This is a nix derivation that wraps a version of julia with the packages
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(and their dependency closure) defined in ~Packages.toml~; currently
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this is just Pluto. It also provides a little julia script that will
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activate this packageset (called a "julia depot"), and then start a
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Pluto notebook server on port 9999. Note that it does so without setting
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up any kind of authenticaton, so don't expose that port!
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* TODOs
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- [ ] add more packages
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- [ ] more sensible auth
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- [ ] working precompilation; this would probably allow running this
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without a writable julia depot
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* Steps to reproduce / update the julia-to-nix part of this:
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In general, it is enough to follow the readme of julia2nix, but since
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that has a bunch of unstated assumptions and weird failure modes, here's a rough outline of how to actually do it:
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- using julia's package managing mode, make changes to ~Packages.toml~
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and ~Manifest.toml~. Be sure to use the same version of julia that
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will run on hainich (currently the ~julia_15~ package of
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nixpkgs-unstable), as otherwise hashes may be different
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- clone https://github.com/thomasjm/julia2nix somewhere
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- run ~julia2nix~ to generate the nix derivations
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+ unfortunately, jula2nix assumes that nixpkgs-unstable is available
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as ~<nixpkgs>~ from within nix; it may fail if you are on another
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channel. In that case, there seems to be no better solution than grepping for occurences of "<nixpkgs>" in jula2nix and replacing
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them with some other path that has the required version
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+ this will re-generate all the ~*.nix~ files in this directory, and
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probably reset all options. The defaults are reasonably sensible,
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but make sure to disable the ~precompile~ option in ~default.nix~
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(see below for why)
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- run ~nix-build --no-out-link~ to check if it worked and nix can
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build the julia depot
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- deploy hainich. Note that the derivation will only contain the
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package sources, not a compiled version. Julia will compile packages
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on startup (and cache them for subsequent runs), so after the deploy
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it may take a minute or two to actually run Pluto
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* precompilation
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/In theory/, we should be able to precompile all the packages during
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nix-build, and then directly load them into julia and runtime.
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However, this currently fails, and even if precompiled packages are
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present in the depot built via nix, julia will refuse to use them and
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recompile them instead (in a second julia depot that is writable at
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runtime).
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There's an open issue on this at jula2nix:
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https://github.com/thomasjm/julia2nix/issues/22
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