'ob run' fails to run freshly initialized project

[Shoadi]

Hello everyone,

after successfully initializing my new obelisk project I am trying to run it - unfortunately unsuccessfully:

[user@OS:~/prj/ob]$ ob run --verbose
Starting Obelisk </nix/store/ndgqr350z5rnr58wd70nwkzjg9847nxq-obelisk-command-0.9.0.1/bin/.ob-wrapped> args=["run","--verbose"] logging-level=Debug
Thunk specification git-v5 did not match "./.obelisk/impl": ReadThunkError_UnrecognizedPaths ("./.obelisk/impl/github.json" :| [])
Thunk specification github-v5 matched "./.obelisk/impl"
./.obelisk/impl: command not cached, building ...
Creating process: nix-build ./.obelisk/impl -A command --out-link ./.obelisk/impl/.attr-cache/command.out
✔ Built on ./.obelisk/impl [command]
Handing off to ./.obelisk/impl/.attr-cache/command.out/bin/ob
Starting Obelisk </nix/store/ndgqr350z5rnr58wd70nwkzjg9847nxq-obelisk-command-0.9.0.1/bin/.ob-wrapped> args=["--no-handoff","run","--verbose"] logging-level=Debug
Finding packages with root "." and interpret paths:
└─ /
   └─ home
      └─ user
         └─ prj
            └─ ob [Interpret]
Creating process: /nix/store/ax8vv1ds6l81jx8cmflx3fvcl9jdxd2w-findutils-4.7.0/bin/find -L . -name .obelisk -type d
Excluding obelisk packages:
Creating process: /nix/store/ax8vv1ds6l81jx8cmflx3fvcl9jdxd2w-findutils-4.7.0/bin/find -L /home/user/prj/ob $'(' -name $'*.cabal' -o -name package.yaml $')' -a -type f -not -path $'*/.attr-cache/*' -not -path $'*/lib/asset/manifest/*'
Creating process: /nix/store/4z4336r8yhyznz3fiscvz53wgdj43kjb-nix-2.3.11/bin/nix eval $'(let a = import ./. {}; in toString (a.reflex.nixpkgs.lib.isDerivation a.passthru.staticFilesImpure))' --raw
Creating process: /nix/store/4z4336r8yhyznz3fiscvz53wgdj43kjb-nix-2.3.11/bin/nix eval -f . passthru.staticFilesImpure --raw
Creating process: /nix/store/vr96j3cxj75xsczl8pzrgsv1k57hcxyp-coreutils-8.31/bin/ln -sfT /home/user/prj/ob/static ./static.out
Creating process: /nix/store/4z4336r8yhyznz3fiscvz53wgdj43kjb-nix-2.3.11/bin/nix-build --no-out-link -E $'(let a = import ./. {}; in a.passthru.processedStatic.haskellManifest)'
Assets impurely loaded from: /home/user/prj/ob/static
Creating process: /nix/store/4z4336r8yhyznz3fiscvz53wgdj43kjb-nix-2.3.11/bin/nix eval $'(import .obelisk/impl {}).nixpkgs.path'
Creating process: /nix/store/4z4336r8yhyznz3fiscvz53wgdj43kjb-nix-2.3.11/bin/nix-shell -E $'{root, pkgs, shell}: ((import root {}).passthru.__unstable__.self.extend (_: _: {shellPackages = builtins.fromJSON pkgs;})).project.shells.${shell}' --arg root ./. --argstr pkgs $'{"backend":"/home/user/prj/ob/backend","common":"/home/user/prj/ob/common","frontend":"/home/user/prj/ob/frontend","obelisk-generated-static":"/nix/store/0r34z6nywaikj6dmsdv856v0d5ylar1m-asset-manifest-haskellManifest"}' --argstr shell ghc --run $'export $\'NIX_PATH=nixpkgs=/nix/store/yxa12wh8fc6j8w61y3jn27vw8dhydby7-source\' ; bash -c \'type -p ghc\''
unpacking 'https://github.com/obsidiansystems/nixpkgs/archive/e6e5ff9cb3529b6de75e5d217222086de17e093a.tar.gz'...

gzip: stdin: unexpected end of file
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
error: program 'tar' failed with exit code 2
(use '--show-trace' to show detailed location information)
Process exited with code 1; /nix/store/4z4336r8yhyznz3fiscvz53wgdj43kjb-nix-2.3.11/bin/nix-shell -E $'{root, pkgs, shell}: ((import root {}).passthru.__unstable__.self.extend (_: _: {shellPackages = builtins.fromJSON pkgs;})).project.shells.${shell}' --arg root ./. --argstr pkgs $'{"backend":"/home/user/prj/ob/backend","common":"/home/user/prj/ob/common","frontend":"/home/user/prj/ob/frontend","obelisk-generated-static":"/nix/store/0r34z6nywaikj6dmsdv856v0d5ylar1m-asset-manifest-haskellManifest"}' --argstr shell ghc --run $'export $\'NIX_PATH=nixpkgs=/nix/store/yxa12wh8fc6j8w61y3jn27vw8dhydby7-source\' ; bash -c \'type -p ghc\''

It seems like a package that was downloaded was corrupt - but even trying the command another time and re-downloading it doesn't really change anything.

I am running on NixOS 22.11.

[ali-abrar]

What version/branch of obelisk are you using?

[Shoadi]

Based on the first line of debugging-messages I assume its version 0.9.0.1
Starting Obelisk </nix/store/ndgqr350z5rnr58wd70nwkzjg9847nxq-obelisk-command-0.9.0.1/bin/.ob-wrapped> args=["run","--verbose"] logging-level=Debug
It is however the version that gets installed when following the guide for NixOS at:
https://github.com/obsidiansystems/obelisk

[ali-abrar]

Could you post the contents of cat .obelisk/impl/github.json? That'll tell us the exact hash of this project's obelisk checkout.

[Max0nyshchenko]

I am having an issue with running a freshly initialized project as well. Here's the log:

ob run -v 
Starting Obelisk </nix/store/5qhw99ipn683vik513frrqraz8c3p07j-obelisk-command-0.9.0.1/bin/.ob-wrapped> args=["run","-v"] logging-level=Debug
Thunk specification git-v7 did not match "./.obelisk/impl": ReadThunkError_UnrecognizedPaths ("./.obelisk/impl/github.json" :| [])
Thunk specification github-v8 matched "./.obelisk/impl"
./.obelisk/impl: command not cached, building ...
Creating process: nix-build ./.obelisk/impl -A command --out-link ./.obelisk/impl/.attr-cache/command.out
DONE Built on ./.obelisk/impl [command]
Handing off to ./.obelisk/impl/.attr-cache/command.out/bin/ob
Starting Obelisk </nix/store/5qhw99ipn683vik513frrqraz8c3p07j-obelisk-command-0.9.0.1/bin/.ob-wrapped> args=["--no-handoff","run","-v"] logging-level=Debug
Finding packages with root "." and interpret paths:
?? /
   ?? home
      ?? max
         ?? Public
            ?? dodjo
               ?? studying
                  ?? learn-you-a-haskell
                     ?? obelisk-test [Interpret]
Creating process: /nix/store/k0kpf3r2k1d8p9h0gmx23msw3qrybkfk-findutils-4.9.0/bin/find -L . -name .obelisk -type d
Excluding obelisk packages: 
Creating process: /nix/store/k0kpf3r2k1d8p9h0gmx23msw3qrybkfk-findutils-4.9.0/bin/find -L /home/max/Public/dodjo/studying/learn-you-a-haskell/obelisk-test $'(' -name $'*.cabal' -o -name package.yaml $')' -a -type f -not -path $'*/.attr-cache/*' -not -path $'*/lib/asset/manifest/*'
Creating process: /nix/store/7wfnj6hg24p9v212qfx81a16f6rnaqzy-nix-2.11.0/bin/nix eval --impure --expr $'(let a = import ./. {}; in toString (a.reflex.nixpkgs.lib.isDerivation a.passthru.staticFilesImpure))' --raw
error: experimental Nix feature 'nix-command' is disabled; use '--extra-experimental-features nix-command' to override
Process exited with code 1; /nix/store/7wfnj6hg24p9v212qfx81a16f6rnaqzy-nix-2.11.0/bin/nix eval --impure --expr $'(let a = import ./. {};
 in toString (a.reflex.nixpkgs.lib.isDerivation a.passthru.staticFilesImpure))' --raw

Nix version : 2.18.1
nix.conf:

build-users-group = nixbld
binary-caches = https://cache.nixos.org https://nixcache.reflex-frp.org
binary-cache-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= ryantrinkle.com-1:JJiAKaRv9mWgpVAz8dwewnZe0AzzEAzPkagE9SP5NWI=
binary-caches-parallel-connections = 40
sandbox = true

my cat .obelisk/impl/github.json:

{
  "owner": "obsidiansystems",
  "repo": "obelisk",
  "branch": "master",
  "private": false,
  "rev": "58c04270d606c061e7ffd2f16345e0f451eba600",
  "sha256": "167h4qkkc7rvhwlfbv3fdj3gd8jn5svdawh2vzpi04j9xlsw3jlf"
}

Could somebody help me, please?

[alexfmpe]

@Max0nyshchenko you need experimental-features = nix-command in your nix.conf, see https://nixos.wiki/wiki/Nix_command

@ali-abrar should obelisk use nix-instantiate --eval instead to avoid this issue until nix-command is no longer experimental? If not the readme probably should warn about it, given we rely on it thrice.

$ git grep -n '"eval"' 
lib/command/src/Obelisk/Command/Project.hs:308:    proc nixExePath ["eval", "(import .obelisk/impl {}).nixpkgs.path"]
lib/command/src/Obelisk/Command/Project.hs:402:      [ "eval"
lib/command/src/Obelisk/Command/Project.hs:417:        proc nixExePath ["eval", "-f", ".", "passthru.staticFilesImpure", "--raw"]

[Max0nyshchenko]

Thanks, working now

[alexfmpe]

@ali-abrar should obelisk use nix-instantiate --eval instead to avoid this issue until nix-command is no longer experimental? If not the readme probably should warn about it, given we rely on it thrice.

Welp

obelisk/lib/command/src/Obelisk/Command/Project.hs

Lines 406 to 408 in 135bfd7

	, "--raw"
	-- `--raw` is not available with old nix-instantiate. It drops quotation
	-- marks and trailing newline, so is very convenient for shelling out.