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[WIP] ldgallery: init at 1.0 #86599

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[WIP] ldgallery: init at 1.0 #86599

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pacien commented May 2, 2020

Motivation for this change

This is an attempt at packaging ldgallery, a static gallery generator.

It's made out of three parts:

  • "ldgallery-viewer" which requires NodeJS to be built
  • "haskellPackages.ldgallery-compiler" which is an Haskell app
  • the "ldgallery" package that assembles the two previous ones
Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits
ldgallery-compiler = self.callPackage ../../tools/graphics/ldgallery/compiler { };

Comment on lines +10 to +11

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pacien May 2, 2020

Author Contributor

The program is a command line tool and not a library, so I'm not sure whether it belongs to Hackage, or even to this listing. Is it sensible to put it in "non-hackage-packages"?

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cdepillabout May 5, 2020


It is easiest for us if it is on Hackage.

It if was on Hackage, then you wouldn't need the pkgs/tools/graphics/ldgallery/compiler/default.nix, since the Haskell automation in nixpkgs would keep it up to date automatically.

Hackage provides hosting for quite a few command line tools that don't provide a library.

@@ -0,0 +1,17 @@
# This file has been generated by node2nix 1.8.0. Do not edit!

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pacien May 2, 2020

Author Contributor

For some reason, npm now fails to find some dependency.

npm ERR! code ENOTCACHEDtchPackageMetaData error for eslint-K
npm ERR! request to failed: cache mode is 'only-if-cached' but no cached response available.

npm ERR! A complete log of this run can be found in:
npm ERR!     /build/.npm/_logs/2020-05-02T15_46_11_921Z-debug.log

builder for '/nix/store/wkac3zzw316cx7mzh70ikw7j9ammcbl7-node_ldgallery-viewer-1.0.0.drv' failed with exit code 1
cannot build derivation '/nix/store/fqjisvda6pvd9lpj5rbapsqiwfslmliy-ldgallery-viewer.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/6whc0iz2qgzmv59nh7nlycv2l1h0ma33-ldgallery-1.0.drv': 1 dependencies couldn't be built
error: build of '/nix/store/6whc0iz2qgzmv59nh7nlycv2l1h0ma33-ldgallery-1.0.drv' failed

"eslint-utils" is however present (twice) in the generated ./node-packages.nix.

@pacien pacien force-pushed the pacien:ldgallery-init branch from dc184a5 to f5a643c May 2, 2020
#!/usr/bin/env nix-shell
#!nix-shell -i bash -p nodePackages.node2nix

# TODO: merge with other node packages once support for npm projects in sub-directories
# is added to node2nix:

# Development dependencies are required for this Vue application to build



node2nix \
--nodejs-12 \
--node-env ../../../../development/node-packages/node-env.nix \
--development \
--input ./package.json \
--lock ./package-lock.json \
--output node-packages.nix \
--composition node-composition.nix

rm package.json package-lock.json
Comment on lines +1 to +23

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pacien May 2, 2020

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Here I have two problems that prevent me from simply adding the "viewer" part to the common list of node packages in pkgs/development/node-packages/node-packages-12.json:

  • node2nix/npm doesn't allow importing projects from a sub-directory in a repository (svanderburg/node2nix#177), so I have to manually extract the package.json and package-lock.json files and run node2nix on those.
  • Building the package (which uses TypeScript and WebPack) also requires downloading development dependencies with the "--development" option when calling node2nix, which isn't used for the common list of node packages.

Keeping this package separate with a script seems to be an acceptable option to work around those issues.

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