Nix + dotnet - Public Room Timeline

	Nix + dotnet	125 Members
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Sender	Message	Time
14 Aug 2023
Emma [it/its]	keep in mind that repo has the missing framework package manually added	17:52:28
Emma [it/its]	In reply to @magikarpz:matrix.org follow the docs to get a buildDotnetModule derivation working, and then run the fetch-deps script from the derivation attributes, as shown in the docs ah i remember now why i cant use fetch-deps	17:57:23
Emma [it/its]	`error: getting status of '/home/root@Rory/EmptyBlazorWasmApp/default.nix': No such file or directory` that doesnt appear to work with flakes	17:57:37
Emma [it/its]	building `.#default.passthru.fetch-deps` made a shellscript as result, i guess thats normal?	19:31:50
Emma [it/its]	oh, using that did include browser-wasm	19:33:13
Emma [it/its]	still fails to build though: `emptyblazorwasmapp-v1> /nix/store/igwf7hm6cjdcl0mac0n2rpmq47ssil6k-dotnet-sdk-7.0.306/sdk/7.0.306/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(135,5): error NETSDK1084: There is no application host available for the specified RuntimeIdentifier 'browser-wasm'. [/build/ml30php8kkq4lqgh2yc0g9fma5c2jnpm-source/EmptyBlazorWasmApp/EmptyBlazorWasmApp.csproj]`	19:35:29
Emma [it/its]	Download EmptyBlazorWasmApp.tar.xz	19:36:35
Emma [it/its]	steps taken: create empty blazor wasm project add simple flake with 1 output generate a deps.nix by invoking a slightly modified version of nuget-to-nix with a wrapper script (mkdeps) that dotnet restore's to a folder for nuget-to-nix to operate on use `nix build .\#default.passthru.fetch-deps` to generate script at `result` run ./result copy output file over deps.nix run `nix build .#`	19:38:45
15 Aug 2023
raphi	In reply to @emma:rory.gay steps taken: create empty blazor wasm project add simple flake with 1 output generate a deps.nix by invoking a slightly modified version of nuget-to-nix with a wrapper script (mkdeps) that dotnet restore's to a folder for nuget-to-nix to operate on use `nix build .\#default.passthru.fetch-deps` to generate script at `result` run ./result copy output file over deps.nix run `nix build .#` as a workaround you can set `useAppHost = false` and `selfContainedBuild = true` in the buildDotnetModule call blazor wasm support is not ideal atm	08:27:06
Yarek T	In reply to @emma:rory.gay steps taken: create empty blazor wasm project add simple flake with 1 output generate a deps.nix by invoking a slightly modified version of nuget-to-nix with a wrapper script (mkdeps) that dotnet restore's to a folder for nuget-to-nix to operate on use `nix build .\#default.passthru.fetch-deps` to generate script at `result` run ./result copy output file over deps.nix run `nix build .#` Deps generated are the same for me	16:40:15
Yarek T	Ah but yes, I get the error. How strange. I will poke around more.	16:45:53
	nevoyu left the room.	19:34:14
Emma [it/its]	In reply to @emma:rory.gay steps taken: create empty blazor wasm project add simple flake with 1 output generate a deps.nix by invoking a slightly modified version of nuget-to-nix with a wrapper script (mkdeps) that dotnet restore's to a folder for nuget-to-nix to operate on use `nix build .\#default.passthru.fetch-deps` to generate script at `result` run ./result copy output file over deps.nix run `nix build .#` the fetch-deps script added one that was missing before with the nuget-to-nix script (Microsoft.NETCore.App.Runtime.Mono.browser-wasm)	19:56:31
Emma [it/its]	or at least, it did in our project, didnt check in the repro	19:57:49
16 Aug 2023
mdarocha	from what I searched, `wasm-tools`, needed by the blazor wasm compilation, is packages as a dotnet workload	06:55:48
mdarocha	and unfortunately, workloads aren't supported in Nix for now - see https://github.com/NixOS/nixpkgs/issues/226107	06:56:10
mdarocha	so to make wasm compilation fully work you would need to try to hack together some form of workload support, I know that previously something was attempted for maui	06:56:44
19 Aug 2023
Emma [it/its]	shouldnt it be a matter of installing the relevant nuget packages?	11:46:17
mdarocha	from what I understand workloads work a little bit differently and aren’t covered by the current nix mechanisms	11:47:47
Emma [it/its]	im guessing the dotnet packages also cant be extended to ship with the workloads builtin?	11:50:54
mdarocha	there were attempts from what i remember, see the issue i linked above	11:51:33
mdarocha	but properly implementing workloads in nix would require understanding how they are installed by the dotnet cli so that we can provide them using the standard nix functions	11:52:14
Emma [it/its]	at least going by https://github.com/NixOS/nixpkgs/blob/nixos-23.05/pkgs/development/compilers/dotnet/versions/7.0.nix, there seems to be a packages array, couldnt the missing ones be added there?	11:52:19
mdarocha	nope, this package array is used to streamline the package updating process	11:53:07
Emma [it/its]	it looks like theyre all just installed to /usr/share/dotnet/packs	11:53:16
Emma [it/its]	* it looks like theyre all just installed to /usr/share/dotnet/packs (arch)	11:53:21
mdarocha	ie those package are implicitly included with every does, and thanks to that we don’t have to regenerate all the deps.nix in the nixpkgs tree	11:53:43
mdarocha	if you want to take a stab at implementing workloads then PRs are welcome :) I unfortunately didn’t have the time to take a look at that issue	11:54:13
Emma [it/its]	both eg. `Microsoft.AspNetCore.App.Ref` and `Microsoft.NETCore.App.Runtime.Mono.browser-wasm` appear to be in in that same /usr/share/dotnet/packs directory	11:54:34
mdarocha	* ie those package are implicitly included with every deps, and thanks to that we don’t have to regenerate all the deps.nix in the nixpkgs tree	11:54:41

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