Build spago from source #981

deemp · 2023-08-01T19:31:59Z

Depends on thomashoneyman/purescript-overlay#71

Description of the change

Set spago built from sources to be the default package
Add a dev devshell to check spago completions and version

thomashoneyman · 2023-08-01T22:51:49Z

See also: #963

The big question here is whether @f-f wants to build spago with Nix or not. If so, then the next question is what to do about the generated BuildInfo file, which is necessary for the build. In the linked PR I made a fake one and included it in the build with writeText, but of course that's quite hacky and if the format of the file falls out of date then the build will be incorrect.

If there isn't a desire to build Spago with Nix, then all that's really needed is a dev shell and this PR could be trimmed down to only include that.

thomashoneyman · 2023-08-01T22:53:48Z

spaghetto/flake.nix

+    easy-purescript-nix = {
+      url = "github:justinwoo/easy-purescript-nix";
+      inputs.flake-utils.follows = "flake-utils";
+    };


Presumably this and purescript-overlay are both included because purifix depends on easy-purescript-nix. Maybe if the easy-purescript-nix dependency is forced then it should just be used in place of purescript-overlay.

deemp · 2023-08-02T10:35:55Z

I removed Spago.Generated.BuildInfo mport because it's not necessary for a build.
I rebased onto Switch to optparse #980 to try completions.

Now, nix build complains about ✘ [ERROR] Could not resolve "fs-extra"

f-f · 2023-08-02T13:49:42Z

@deemp a few notes:

we'll need the Spago.Generated.BuildInfo import for the spago --version flag to work (see the review of #980)
@thomashoneyman's purescript-overlay has a derivation for building Spago. That's the "canonical" way (for now) to build Spago with Nix, so if we want such a Nix recipe in this repo instead then we should just port that one over. I entrust Thomas to be able to give the best guidance on this

thomashoneyman · 2023-08-02T14:04:20Z

This is the derivation that was used to build Spago, which I believe @f-f is referring to:
https://github.com/thomashoneyman/purescript-overlay/blob/6363b8129ea057adf69eb65650ed4035c1a7e48d/nix/mkSpagoDerivation.nix

Now, though, Spago is built by recording the hash and url of its tarball from NPM:
https://github.com/thomashoneyman/purescript-overlay/blob/339dc45f5f883644ce59bd95d23753c93845093e/manifests/spago.json#L152-L155

The overlay just unpacks the tarball. So that wouldn't be suitable for building Spago from source here (but the first derivation could be).

deemp · 2023-08-03T04:37:00Z

@f-f, thank you for reviews. I haven't noticed the usage of Spago.Generated.BuildInfo because I commented out the version flag 🤦.

I'll try to write a fixed-output derivation to build spago with spago. Probably, it'll be possible to automate hash production.

deemp · 2023-08-04T13:13:11Z

I tried to use dream2nix to provide node_modules.

js = (inputs.dream2nix.lib.makeFlakeOutputs {
  systems = [ system ];
  config.projectRoot = ./.;
  source = ./.;
  # autoProjects = true;
  projects = {
    spago = {
      name = "spago";
      relPath = "";
      subsystem = "nodejs";
      translator = "package-lock";
      subsystemInfo = {
        nodejs = 18;
      };
    };
  };
});

js-modules = js.packages.${system}.spago.overrideAttrs (x: {
  installPhase = ''
    mkdir $out
    cp -r node_modules/* $out
  '';
});

However, when I tried to copy them into a FOD, several node packages triggered an error. I found no info about this error.

error: illegal path references in fixed-output derivation '/nix/store/rjl96zjihzfwinb2l84rpnmqbxn12bv5-spago.drv'

These packages were cpu-features ssh2 mkdirp nan rimraf semver. The packages cpu-features and ssh2 had symlinks to python3. I don't know what was wrong with other packages.

I found bad packages via a ternary search by rm -rf the packages ls node_modules | head -n $H | tail -n $T.

Doing patchShebangs on the resulting bundle.js also led to that error.

I decided to just bundle in the FOD and apply any other improvements in other derivations.

thomashoneyman · 2023-08-04T13:17:08Z

The previous stab at building spago with nix used slimlock and that worked just fine:
https://github.com/thomashoneyman/slimlock

deemp · 2023-08-06T16:59:27Z

I added a pre-commit hook that builds a spago FOD and writes its outputHash into the bin/outputHash file. This way, the FOD is always in sync with code.

The hook can be installed by entering the default devshell in ./spaghetto and running pre-commit install

On my computer, this hook took from several seconds to two minutes.

The FOD used slimlock and buildSpagoLock.

slimlock worked fine and fast.

spago bundle took most of the build time. I copied modules produced by pkgs.purix.buildSpagoLock, but spago ignored them and compiled everything from scratch. Copying was introduced in 74750e0.

@thomashoneyman, how can I tell spago to use pre-built modules?

deemp · 2023-08-06T19:52:28Z

Completions work in a devshell.

nix develop .#spago
spago ini<TAB>

deemp · 2023-08-07T03:19:33Z

Now, I believe the pre-commit part is excessive.
The FOD can be automatically generated from the source code, so the FOD should go into purescript-overlay.

The FOD should be available as a function of a commit hash and that FOD outputHash with the default outputHash being an empty string. This way, a user will be able to build spago from sources.

f-f · 2023-09-28T11:46:56Z

@deemp are you still interested in this? I would like to have a flake in Spago itself, if it's possible to keep it simple

deemp · 2023-09-28T16:03:01Z

@f-f, yes, I am. I have a couple of questions, though.

Does spago support offline builds? (related issue)

If no, we'll have to use a fixed-output derivation and store its hash somewhere. Main options:

Store in purescript/spago. Since we want to associate a hash with a commit, we'll need to:
1. In CI, build FOD to get its hash.
2. Add this hash to the last commit, e.g., reset the last commit, save derivation hash in a file, stage the file, commit again, force push.
Store in thomashoneyman/purescript-overlay. Then, we can:
1. In CI, fetch the latest commit from purescript/spago.
2. Build FOD, get its hash, and save it.
3. Commit, push.

In 1, we'll have a derivation for each commit, but will have to force-push extended commits.
In 2, we'll have a derivation for each commit that was latest in purescript/spago before running a CI in thomashoneyman/purescript-overlay.

Please, let me know if there are other options.

Which one do you prefer?

f-f · 2023-09-28T17:07:02Z

@deemp we can (and should) definitely support offline building (which is my preferred option) - but that means that we would need the build inputs (the registry and registry-index repo, and the dependencies) to come via nix (not sure what's the best way to do it today, but we have a spago.lock file these days so it should be possible)

thomashoneyman · 2023-09-28T17:56:44Z

They can just be inputs to the flake (see how purifix does it). They could then be copied into a .spago directory or spago could accept flags to pass the paths of the two repos, which in this case would be store paths.

f-f · 2023-09-29T21:00:05Z

Ah, I see. Then I guess #575 is the next blocker for this

thomashoneyman · 2023-09-29T21:30:24Z

For what it's worth, you don't need to bring in the registry or registry-index to build Spago from its dependencies, because the lock file includes everything Nix needs. In purescript-overlay I was previously building Spago from source from the lockfile and package-lock.json alone.

f-f · 2023-10-06T19:15:22Z

We now have a --offline flag (merged in #1044) so this is unblocked - time to figure out what's the next blocker 🙂

f-f · 2023-10-12T12:36:02Z

This comment is likely relevant to this PR: thomashoneyman/purescript-overlay#47 (comment)

f-f · 2023-10-15T11:22:15Z

@deemp still interested in contributing this or shall we close it?

deemp · 2023-10-15T12:22:33Z

@f-f, sorry, was busy with studies. I'm interested in this. I'll have time next week so please don't close it yet.

f-f · 2023-10-15T17:24:36Z

No worries at all. Thanks!

deemp · 2023-10-24T19:16:52Z

I updated the flake to bundle spago with --offline. @thomashoneyman, how to fix this problem?

nix build fails.

nix log /nix/store/bs9rr1bbc5fy4i15ds5dq9skjp1v38aw-ordered-collections.drv produces this:

Fetching dependencies...
Merge cache-db.json files...
Error 1 of 2:

  in module Data.Map.Internal
  at /nix/store/n61fnbpabgyvaz563sbhykqg4hxqra26-ordered-collections/src/Data/Map/Internal.purs:72:1 - 72:112 (>

    Module Data.Function.Uncurried was not found.
    Make sure the source file exists, and that it has been provided as an input to the compiler.


  See https://github.com/purescript/documentation/blob/master/errors/ModuleNotFound.md for more information,
  or to contribute content related to this error.

Error 2 of 2:

  in module Data.Set.NonEmpty
  at /nix/store/n61fnbpabgyvaz563sbhykqg4hxqra26-ordered-collections/src/Data/Set/NonEmpty.purs:32:1 - 32:39 (l>

    Module Data.Function.Uncurried was not found.
    Make sure the source file exists, and that it has been provided as an input to the compiler.


  See https://github.com/purescript/documentation/blob/master/errors/ModuleNotFound.md for more information,
  or to contribute content related to this error.


purs compile failed with exit code 1.
Error 1 of 2:

  in module Data.Map.Internal
  at /nix/store/n61fnbpabgyvaz563sbhykqg4hxqra26-ordered-collections/src/Data/Map/Internal.purs:72:1 - 72:112 (>

    Module Data.Function.Uncurried was not found.
    Make sure the source file exists, and that it has been provided as an input to the compiler.


  See https://github.com/purescript/documentation/blob/master/errors/ModuleNotFound.md for more information,
  or to contribute content related to this error.

Error 2 of 2:

  in module Data.Set.NonEmpty
  at /nix/store/n61fnbpabgyvaz563sbhykqg4hxqra26-ordered-collections/src/Data/Set/NonEmpty.purs:32:1 - 32:39 (l>

    Module Data.Function.Uncurried was not found.
    Make sure the source file exists, and that it has been provided as an input to the compiler.


  See https://github.com/purescript/documentation/blob/master/errors/ModuleNotFound.md for more information,
  or to contribute content related to this error.


lines 42-55/55 (END)

deemp · 2024-01-20T18:44:46Z

I've updated the PR.

Now, I get these errors:

Error found:
in module Spago.BuildInfo
at /nix/store/00hmlncdnz5pzvk6p10baaszjya4ywl4-spago/src/Spago/BuildInfo.purs:78:25 - 78:43 (line 78, column 25 - line 78, >

  Type of expression lacks required label "spago-bin".

while checking that type Record (() @Type)
  is at least as general as type { "spago-bin" :: t0
                                 | t1
                                 }
while checking that expression packages
  has type { "spago-bin" :: t0
           | t1
           }
while checking type of property accessor packages."spago-bin"
in value declaration mkBuildInfo

where t0 is an unknown type
      t1 is an unknown type

See https://github.com/purescript/documentation/blob/master/errors/PropertyIsMissing.md for more information,
or to contribute content related to this error.


...skipping...


Error found:
in module Spago.BuildInfo
at /nix/store/00hmlncdnz5pzvk6p10baaszjya4ywl4-spago/src/Spago/BuildInfo.purs:78:25 - 78:43 (line 78, column 25 - line 78, >

  Type of expression lacks required label "spago-bin".

while checking that type Record (() @Type)
  is at least as general as type { "spago-bin" :: t0
                                 | t1
                                 }
while checking that expression packages
  has type { "spago-bin" :: t0
           | t1
           }
while checking type of property accessor packages."spago-bin"
in value declaration mkBuildInfo

where t0 is an unknown type
      t1 is an unknown type

See https://github.com/purescript/documentation/blob/master/errors/PropertyIsMissing.md for more information,
or to contribute content related to this error.

f-f · 2024-01-20T19:27:17Z

@deemp the format of the BuildInfo module has changed - previously the packages were contained in a record buildInfo.packages, now they are just in packages

deemp · 2024-01-20T20:22:30Z

Seems like this is a problem with purix.buildSpagoLock. I see a comment by @thomashoneyman there.

But now there is spago.

I don't get what's the problem with using it directly.

deemp · 2024-01-21T23:48:26Z

@f-f, building spago from source works (see thomashoneyman/purescript-overlay#71). Tests fail so far.

Should I move the code for bulding spago here?

toastal · 2024-01-22T18:10:31Z

build.nix

+    inherit system;
+    overlays = [
+      purescript-overlay.overlays.default
+      (self: super: { purescript = self.purs-unstable; nodejs = super.nodejs_18; })


This node version is now the default & will eventually be deprecated. It’d be better to throw an error if the version is less than 18 if you wanted to check I think.

toastal · 2024-01-22T18:11:25Z

build.nix

+    chmod +w -R .
+
+    cp -r ${nodeDependencies}/js/node_modules .
+    cp -r ${spagoDependencies.spago-bin}/output .


You could use ln -s to not copy the files in.

toastal · 2024-01-22T18:14:15Z

flake.nix

@@ -3,6 +3,9 @@
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
    purescript-overlay.url = "github:thomashoneyman/purescript-overlay";
    purescript-overlay.inputs.nixpkgs.follows = "nixpkgs";
+    flake-utils.url = "github:numtide/flake-utils";


This isn’t used

deemp · 2024-01-22T21:41:32Z

@toastal, thank you for a review.

I'm going to finish thomashoneyman/purescript-overlay#71.

When it works, I'll move the spago derivation from there to here.

- set it as the default package - add to a devshell

deemp · 2024-01-28T22:55:05Z

@toastal, @thomashoneyman, the spago derivation works. However, I used the not yet merged PR thomashoneyman/purescript-overlay#71. Could you please check both PRs?

In this PR (to spago repo), you can run spago and see completions:

nix develop .#dev
spago <TAB>
--help     build      graph      publish    sources    
--version  bundle     init       registry   test/      
-h         docs       install    repl       uninstall  
-v         fetch      ls         run        upgrade

thomashoneyman reviewed Aug 1, 2023

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deemp force-pushed the add-flake branch from be9a26d to 7c7c074 Compare August 2, 2023 10:31

deemp force-pushed the add-flake branch from f3cbfec to a7796dc Compare August 3, 2023 19:28

deemp marked this pull request as draft September 27, 2023 12:19

f-f added the blocked label Oct 2, 2023

f-f removed the blocked label Oct 6, 2023

f-f mentioned this pull request Oct 15, 2023

Trouble using local package_set #1088

Closed

deemp force-pushed the add-flake branch from bd750f9 to 4cf36e9 Compare October 24, 2023 19:05

deemp force-pushed the add-flake branch from 4cf36e9 to 662edf4 Compare January 20, 2024 18:43

deemp force-pushed the add-flake branch 2 times, most recently from b888c0e to 6e15324 Compare January 21, 2024 14:19

deemp mentioned this pull request Jan 21, 2024

Update buildSpagoLock and refactor thomashoneyman/purescript-overlay#71

Merged

f-f mentioned this pull request Jan 22, 2024

Add overlay+package to the Nix Flake purescm/purescm#220

Open

toastal reviewed Jan 22, 2024

View reviewed changes

deemp changed the title ~~add flake~~ Build spago from source Jan 25, 2024

deemp force-pushed the add-flake branch from 6e15324 to 72af2f8 Compare January 25, 2024 16:50

deemp added 3 commits January 29, 2024 01:47

fix: add stringutils (necessary for spago derivation)

86a49e5

chore: update nixpkgs

67b457c

feat: add spago derivation

fc0e7c2

- set it as the default package - add to a devshell

deemp force-pushed the add-flake branch from 72af2f8 to fc0e7c2 Compare January 28, 2024 22:48

f-f mentioned this pull request Jul 25, 2024

Use Flake to package Spago for NixPkgs #1248

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Build spago from source #981

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