diff options
author | Ralph Amissah <ralph.amissah@gmail.com> | 2021-05-15 18:10:04 -0400 |
---|---|---|
committer | Ralph Amissah <ralph.amissah@gmail.com> | 2021-05-15 22:25:58 -0400 |
commit | 924fabf26347cf2da0a770cd16f956c26e4064f9 (patch) | |
tree | 80c97145dca8188df5f7131694e5dc2f5990b7ff /src | |
parent | cgi.d arsd update (diff) |
nix-build cleanup, external sources localized
- clean up as external sources kept locally, in
./src/ext_depends/
- remove dub2nix dependency, no longer needed/used
Diffstat (limited to 'src')
-rw-r--r-- | src/build_depends/dub2nix.meta | 3 | ||||
-rw-r--r-- | src/build_depends/dub2nix/.github/workflows/main.yml | 31 | ||||
-rw-r--r-- | src/build_depends/dub2nix/.gitignore | 5 | ||||
-rw-r--r-- | src/build_depends/dub2nix/LICENSE | 21 | ||||
-rw-r--r-- | src/build_depends/dub2nix/README.md | 82 | ||||
-rw-r--r-- | src/build_depends/dub2nix/default.nix | 2 | ||||
-rw-r--r-- | src/build_depends/dub2nix/dub.json | 15 | ||||
-rw-r--r-- | src/build_depends/dub2nix/dub.selections.json | 7 | ||||
-rw-r--r-- | src/build_depends/dub2nix/dub.selections.nix | 26 | ||||
-rw-r--r-- | src/build_depends/dub2nix/dub2nix.nix | 17 | ||||
-rw-r--r-- | src/build_depends/dub2nix/mkDub.nix | 121 | ||||
-rw-r--r-- | src/build_depends/dub2nix/shell.nix | 16 | ||||
-rw-r--r-- | src/build_depends/dub2nix/src/dub2nix.d | 263 | ||||
-rw-r--r-- | src/build_depends/shaHEADdep_dub2nix | 1 |
14 files changed, 0 insertions, 610 deletions
diff --git a/src/build_depends/dub2nix.meta b/src/build_depends/dub2nix.meta deleted file mode 100644 index 211a6f0..0000000 --- a/src/build_depends/dub2nix.meta +++ /dev/null @@ -1,3 +0,0 @@ -dub2nix 8f68d27c -https://github.com/lionello/dub2nix -MIT License diff --git a/src/build_depends/dub2nix/.github/workflows/main.yml b/src/build_depends/dub2nix/.github/workflows/main.yml deleted file mode 100644 index fe9e10a..0000000 --- a/src/build_depends/dub2nix/.github/workflows/main.yml +++ /dev/null @@ -1,31 +0,0 @@ -# This is a basic workflow to help you get started with Actions - -name: CI - -# Controls when the action will run. Triggers the workflow on push or pull request -# events but only for the master branch -on: - push: - branches: [ master ] - pull_request: - branches: [ master ] - -# A workflow run is made up of one or more jobs that can run sequentially or in parallel -jobs: - # This workflow contains a single job called "build" - build: - # The type of runner that the job will run on - runs-on: ubuntu-latest - - # Steps represent a sequence of tasks that will be executed as part of the job - steps: - # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it - - uses: actions/checkout@v2 - - - name: Install Nix - uses: cachix/install-nix-action@v12 - with: - nix_path: nixpkgs=channel:nixos-unstable - - - name: Build in shell - run: nix-shell --run "dub test" diff --git a/src/build_depends/dub2nix/.gitignore b/src/build_depends/dub2nix/.gitignore deleted file mode 100644 index 19eefee..0000000 --- a/src/build_depends/dub2nix/.gitignore +++ /dev/null @@ -1,5 +0,0 @@ -dub2nix -/.dub/ -/result -/bin -.envrc diff --git a/src/build_depends/dub2nix/LICENSE b/src/build_depends/dub2nix/LICENSE deleted file mode 100644 index 88e0035..0000000 --- a/src/build_depends/dub2nix/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -MIT License - -Copyright (c) 2020 Lionello Lunesu - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. diff --git a/src/build_depends/dub2nix/README.md b/src/build_depends/dub2nix/README.md deleted file mode 100644 index bfb8e3a..0000000 --- a/src/build_depends/dub2nix/README.md +++ /dev/null @@ -1,82 +0,0 @@ -# dub2nix -CLI tool to create Nix expressions for D-lang Dub projects. - -![CI](https://github.com/lionello/dub2nix/workflows/CI/badge.svg) - -## Installation -Install with `nix-env`: -```sh -nix-env -if https://github.com/lionello/dub2nix/archive/master.tar.gz -``` -or add to your `shell.nix` and run `nix-shell`: -```nix -with import <nixpkgs> {}; -let - dub2nix-src = fetchTarball { - url = "https://github.com/lionello/dub2nix/archive/master.tar.gz"; - }; - dub2nix = (import dub2nix-src) { inherit pkgs; }; -in mkShell { - buildInputs = [ - dub2nix # dub dmd rdmd ldc etc.. - ]; -} -``` - -## Development -Do `git clone` and `nix-shell` to build with `dub`: -```sh -nix-shell -dub -``` -Alternatively, use `direnv`: -```sh -echo use nix >> .envrc -direnv allow -dub -``` - -## Usage -``` -Usage: dub2nix [OPTIONS] COMMAND - -Create Nix derivations for Dub package dependencies. - -Commands: - save Write Nix files for Dub project - -Options: --i --input Path of selections JSON; defaults to ./dub.selections.json --o --output Output Nix file for Dub project --r --registry URL to Dub package registry; default http://code.dlang.org/packages/ --d --deps-file Output Nix file with dependencies; defaults to ./dub.selections.nix --h --help This help information. -``` -First, use `dub build` to generate the `dub.selections.json` for your Dub project. -Then, run `dub2nix save` to read the `dub.selections.json` in the current folder and write a new file `dub.selections.nix`. - -This `dub.selections.nix` is used in `mkDubDerivation` (from `mkDub.nix`) to create a new derivation for your Dub project: -```nix -{pkgs}: -with (import ./mkDub.nix { - inherit pkgs; -}); -mkDubDerivation { - version = "0.1.0"; # optional - src = ./.; -} -``` - -When your project has no dependencies at all, this will fail because `dub.selections.nix` is missing. Set `deps` to override the dependencies: -```nix -{pkgs}: -with (import ./mkDub.nix { - inherit pkgs; -}); -mkDubDerivation { - src = ./.; - deps = []; -} -``` - -Use the `--output` option to write a `.nix` file with a skeleton derivation for your dub project. This will also create the `mkDub.nix` file for importing into the derivation. diff --git a/src/build_depends/dub2nix/default.nix b/src/build_depends/dub2nix/default.nix deleted file mode 100644 index d967504..0000000 --- a/src/build_depends/dub2nix/default.nix +++ /dev/null @@ -1,2 +0,0 @@ -{ pkgs ? import <nixpkgs> {} }: -pkgs.callPackage ./dub2nix.nix {} diff --git a/src/build_depends/dub2nix/dub.json b/src/build_depends/dub2nix/dub.json deleted file mode 100644 index 18ed81d..0000000 --- a/src/build_depends/dub2nix/dub.json +++ /dev/null @@ -1,15 +0,0 @@ -{ - "name": "dub2nix", - "authors": [ - "Lionello Lunesu" - ], - "dependencies": { - "vibe-d:data": "*" - }, - "stringImportPaths": ["."], - "description": "Create Nix derivations for Dub package dependencies", - "targetPath": "./bin/", - "copyright": "Copyright © 2020, Lionello Lunesu", - "license": "MIT", - "targetType": "executable" -} diff --git a/src/build_depends/dub2nix/dub.selections.json b/src/build_depends/dub2nix/dub.selections.json deleted file mode 100644 index de6fe4d..0000000 --- a/src/build_depends/dub2nix/dub.selections.json +++ /dev/null @@ -1,7 +0,0 @@ -{ - "fileVersion": 1, - "versions": { - "stdx-allocator": "2.77.5", - "vibe-d": "0.8.5" - } -} diff --git a/src/build_depends/dub2nix/dub.selections.nix b/src/build_depends/dub2nix/dub.selections.nix deleted file mode 100644 index 26a9c05..0000000 --- a/src/build_depends/dub2nix/dub.selections.nix +++ /dev/null @@ -1,26 +0,0 @@ -# This file was generated by https://github.com/lionello/dub2nix v0.2.4 -[ { - fetch = { - type = "git"; - url = "https://github.com/vibe-d/vibe.d.git"; - rev = "v0.8.5"; - sha256 = "0s1caxqmq2497j5x8h06f44nr597h9zac8qxxml953lkaqkhbzgy"; - fetchSubmodules = false; - date = "2019-03-24T14:45:15+01:00"; - deepClone = false; - leaveDotGit = false; - path = "/nix/store/kz5g44dncvznlkm38a74cmm4qyl9nr6b-vibe.d"; - }; -} { - fetch = { - type = "git"; - url = "https://github.com/wilzbach/stdx-allocator.git"; - rev = "v2.77.5"; - sha256 = "03av8zp5p6vf6fg005xbmwnjfw96jyrr4dcj4m56c4a3vx7v72pk"; - fetchSubmodules = false; - date = "2018-12-23T13:54:22+01:00"; - deepClone = false; - leaveDotGit = false; - path = "/nix/store/b3h25asfh205wzwjfzjf2k2kkccpp96k-stdx-allocator"; - }; -} ]
\ No newline at end of file diff --git a/src/build_depends/dub2nix/dub2nix.nix b/src/build_depends/dub2nix/dub2nix.nix deleted file mode 100644 index ef4bd5f..0000000 --- a/src/build_depends/dub2nix/dub2nix.nix +++ /dev/null @@ -1,17 +0,0 @@ -{pkgs}: -with (import ./mkDub.nix { - inherit pkgs; -}); -mkDubDerivation { - src = pkgs.lib.cleanSource ./.; - # dubJSON = ./dub.json; - # selections = ./dub.selections.nix; - version = "0.2.4"; - # doCheck = true; - propagatedBuildInputs = [ pkgs.nix-prefetch-git pkgs.cacert ]; - meta = with pkgs.stdenv.lib; { - homepage = "https://github.com/lionello/dub2nix"; - maintainers = [ maintainers.lionello ]; - license = licenses.mit; - }; -} diff --git a/src/build_depends/dub2nix/mkDub.nix b/src/build_depends/dub2nix/mkDub.nix deleted file mode 100644 index 7fddf14..0000000 --- a/src/build_depends/dub2nix/mkDub.nix +++ /dev/null @@ -1,121 +0,0 @@ -{ pkgs ? import <nixpkgs> {}, - stdenv ? pkgs.stdenv, - rdmd ? pkgs.rdmd, - dmd ? pkgs.dmd, - dub ? pkgs.dub }: - -with stdenv; -let - # Filter function to remove the .dub package folder from src - filterDub = name: type: let baseName = baseNameOf (toString name); in ! ( - type == "directory" && baseName == ".dub" - ); - - # Convert a GIT rev string (tag) to a simple semver version - rev-to-version = builtins.replaceStrings ["v" "refs/tags/v"] ["" ""]; - - dep2src = dubDep: pkgs.fetchgit { inherit (dubDep.fetch) url rev sha256 fetchSubmodules; }; - - # Fetch a dependency (source only for now) - fromDub = dubDep: mkDerivation rec { - name = "${src.name}-${version}"; - version = rev-to-version dubDep.fetch.rev; - nativeBuildInputs = [ rdmd dmd dub ]; - src = dep2src dubDep; - - buildPhase = '' - runHook preBuild - export HOME=$PWD - dub build -b=release - runHook postBuild - ''; - - # outputs = [ "lib" ]; - - # installPhase = '' - # runHook preInstall - # mkdir -p $out/bin - # runHook postInstall - # ''; - }; - - # Adds a local package directory (e.g. a git repository) to Dub - dub-add-local = dubDep: "dub add-local ${(fromDub dubDep).src.outPath} ${rev-to-version dubDep.fetch.rev}"; - - # The target output of the Dub package - targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}"; - - # Remove reference to build tools and library sources - disallowedReferences = deps: [ dmd rdmd dub ] ++ builtins.map dep2src deps; - - removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}''; - -in { - inherit fromDub; - - mkDubDerivation = lib.makeOverridable ({ - src, - nativeBuildInputs ? [], - dubJSON ? src + "/dub.json", - selections ? src + "/dub.selections.nix", - deps ? import selections, - passthru ? {}, - package ? lib.importJSON dubJSON, - ... - } @ attrs: stdenv.mkDerivation ((removeAttrs attrs ["package" "deps" "selections" "dubJSON"]) // { - - pname = package.name; - - nativeBuildInputs = [ rdmd dmd dub pkgs.removeReferencesTo ] ++ nativeBuildInputs; - disallowedReferences = disallowedReferences deps; - - passthru = passthru // { - inherit dub dmd rdmd pkgs; - }; - - src = lib.cleanSourceWith { - filter = filterDub; - src = lib.cleanSource src; - }; - - preFixup = '' - find $out/bin -type f -exec ${removeExpr (disallowedReferences deps)} '{}' + || true - ''; - - buildPhase = '' - runHook preBuild - - export HOME=$PWD - ${lib.concatMapStringsSep "\n" dub-add-local deps} - dub build -b release --combined --skip-registry=all - - runHook postBuild - ''; - - checkPhase = '' - runHook preCheck - - export HOME=$PWD - ${lib.concatMapStringsSep "\n" dub-add-local deps} - dub test --combined --skip-registry=all - - runHook postCheck - ''; - - installPhase = '' - runHook preInstall - - mkdir -p $out/bin - cp -r "${targetOf package}" $out/bin - - runHook postInstall - ''; - - meta = lib.optionalAttrs (package ? description) { - description = package.description; - } // attrs.meta or {}; - } // lib.optionalAttrs (!(attrs ? version)) { - # Use name from dub.json, unless pname and version are specified - name = package.name; - })); -} diff --git a/src/build_depends/dub2nix/shell.nix b/src/build_depends/dub2nix/shell.nix deleted file mode 100644 index 002ff55..0000000 --- a/src/build_depends/dub2nix/shell.nix +++ /dev/null @@ -1,16 +0,0 @@ -with import <nixpkgs> {}; - -let - pkg = import ./default.nix { inherit pkgs; }; - -in mkShell { - - buildInputs = [ - # additional runtime dependencies go here - ] ++ pkg.buildInputs ++ pkg.propagatedBuildInputs; - - nativeBuildInputs = [ - # additional dev dependencies go here - ] ++ pkg.nativeBuildInputs; - -} diff --git a/src/build_depends/dub2nix/src/dub2nix.d b/src/build_depends/dub2nix/src/dub2nix.d deleted file mode 100644 index e92ecf8..0000000 --- a/src/build_depends/dub2nix/src/dub2nix.d +++ /dev/null @@ -1,263 +0,0 @@ -#!/usr/bin/env dub -/+ dub.sdl: - name "dub2nix" - stringImportPaths "." - dependency "vibe-d:data" version="*" -+/ -import vibe.data.json, std.string; - -enum mkDubNix = import("./mkDub.nix"); -enum VERSION = "0.2.4"; -enum HEADER = "# This file was generated by https://github.com/lionello/dub2nix v"~VERSION~"\n"; - -unittest { - static assert(import("./dub2nix.nix").indexOf(VERSION) > 0, "VERSION does not match version in dub2nix.nix"); -} - -struct DubSelections { - int fileVersion; - string[string] versions; -} - -struct DubRepo { - string owner; - string kind; - string project; -} - -private string packageRegistry = "http://code.dlang.org/packages/"; - -private auto download(string url) @trusted { -version(none) { - // This works, but causes "leaking eventcore driver" warnings at shutdown - import vibe.http.client : requestHTTP; - scope res = requestHTTP(); - return res.readJson(); -} else { - import std.net.curl: get, HTTP; - auto http = HTTP(); - // Using deflate saves A LOT of traffic, ~40x - http.addRequestHeader("accept-encoding", "deflate"); - http.addRequestHeader("accept", "application/json"); - const data = get(url, http); - // Only accepting application/json, so anything else must be compressed - if (data[0] != '{') { - import std.zlib : uncompress; - return parseJsonString(cast(string)uncompress(data)); - } else { - // parseJsonString takes immutable string, so need the .idup here - return parseJsonString(data.idup); - } -} -} - -/// Query Dub registry for the repository information of a package -auto findRepo(string pname) @safe { - const url = packageRegistry ~ pname ~ ".json"; - const json = download(url); - return deserializeJson!DubRepo(json["repository"]); -} - -struct NixPrefetchGit { - @optional string type; /// set to "git", like Go deps.nix - string url; /// URL of GIT repository - string rev; /// sha1 or tag - string sha256; /// calculated by from nix-prefetch-git - @optional bool fetchSubmodules; /// optional; defaults to true - @optional string date; /// ignored; fetchgit doesn't actually want this - @optional bool deepClone; /// ignored - @optional bool leaveDotGit; /// ignored; if the .git directory should be preserved - @optional string path; /// ignored; a path in the Nix store? -} - -/// Invoke nix-prefetch-git and return the parsed JSON -auto nixPrefetchGit(string url, string rev) @safe { - import std.process : executeShell, Config; - const cmd = "nix-prefetch-git --quiet " ~ url ~ " " ~ rev; - return deserializeJson!NixPrefetchGit( - executeShell(cmd, null, Config.stderrPassThrough).output - ); -} - -struct DubDep { - NixPrefetchGit fetch; /// like Go deps.nix -} - -/// Fetch the repo information for package `pname` and version `ver` -auto prefetch(string pname, string ver) @safe { - const repo = findRepo(pname); - assert(repo.kind == "github"); - const url = "https://" ~ repo.kind ~ ".com/" ~ repo.owner ~ '/' ~ repo.project ~ ".git"; - const tag = "v" ~ ver; - auto set = nixPrefetchGit(url, tag); - // Overwrite the sha1 ref with the tag instead, so we have the version info as well - set.rev = tag; - set.type = "git"; - return DubDep(set); -} - -/// Convert D string to Nix string literal -auto toNixString(in string s, int indent = 0) pure @safe { - if (s is null) { - return "null"; - } else if (s.indexOfAny("\"\n") >= 0) - return "''\n" ~ s ~ "''"; - else - return '"' ~ s ~ '"'; -} - -unittest { - static assert(toNixString(null) == "null"); - static assert(toNixString("hello") == `"hello"`); - static assert(toNixString("with\nnewline") == "''\nwith\nnewline''"); - static assert(toNixString(`with "quotes"`) == "''\nwith \"quotes\"''"); -} - -/// Convert D bool to Nix boolean literal -auto toNixString(bool b, int indent = 0) pure @safe { - return b ? "true" : "false"; -} - -unittest { - static assert(toNixString(true) == "true"); - static assert(toNixString(false) == "false"); -} - -private enum INDENT = " "; - -/// Convert D struct to Nix set -auto toNixString(T)(in T pod, int indent = 0) pure @safe if (is(T == struct)) { - string prefix = INDENT[0..indent * 2 + 2]; - string set = "{\n"; - foreach(i, ref key; pod.tupleof) { - const id = __traits(identifier, pod.tupleof[i]); - set ~= prefix ~ id ~ " = " ~ toNixString(key, indent + 1) ~ ";\n"; - } - return set ~ INDENT[0..indent * 2] ~ "}"; -} - -unittest { - struct TestStruct { bool b; } - static assert(toNixString(TestStruct.init) == "{\n b = false;\n}"); - static assert(toNixString(TestStruct.init, 1) == "{\n b = false;\n }"); -} - -/// Convert D AArray to Nix set -auto toNixString(T)(in T[string] aa, int indent = 0) pure @safe { - string prefix = INDENT[0..indent * 2 + 2]; - string set = "{\n"; - foreach(id, ref key; aa) { - set ~= prefix ~ id ~ " = " ~ toNixString(key, indent + 1) ~ ";\n"; - } - return set ~ INDENT[0..indent * 2] ~ "}"; -} - -unittest { - static assert(toNixString(["s": "x"]) == "{\n s = \"x\";\n}"); - static assert(toNixString(["s": ["x": true]]) == "{\n s = {\n x = true;\n };\n}"); -} - -/// Convert D array/range to Nix list -import std.range : isForwardRange; -auto toNixString(R)(in R range, int indent = 0) pure @safe if (isForwardRange!R && !is(R : string)) { - string list = "[ "; - foreach(const ref item; range) { - list ~= toNixString(item, indent) ~ " "; - } - return list ~ "]"; -} - -unittest { - static assert(toNixString(["a"]) == `[ "a" ]`); -} - -/// Create Nix expression for all dependencies in the selections JSON -auto createNixDeps(string selectionsJson) { - import std.parallelism : taskPool; - import std.array : byPair, array; - import std.stdio : writeln; - - const selections = deserializeJson!DubSelections(selectionsJson); - assert(selections.fileVersion == 1); - - static auto progress(Tuple)(in Tuple pair) { - writeln("# Prefetching ", pair.key, "-", pair.value); - return prefetch(pair.key, pair.value); - } - - // Fetch all dependency information in parallel - debug scope(success) writeln("# Done."); - return HEADER ~ toNixString(taskPool.amap!progress(selections.versions.byPair.array)); -} - -unittest { - enum json = import("./dub.selections.json"); - enum fixture = import("./dub.selections.nix"); - assert(createNixDeps(json) == fixture); -} - -// No "main" when we're running with unittests -version(unittest) {} else { - -int main(string[] args) { - import std.stdio : writeln; - import std.file : readText, write; - import std.getopt: getopt, defaultGetoptPrinter; - - bool showVersion; - string input = "./dub.selections.json", deps = "./dub.selections.nix", output; - auto result = getopt(args, - "input|i|in", "Path of selections JSON; defaults to " ~ input, &input, - "output|o|out", "Output Nix file for Dub project.", &output, - "registry|r", "URL to Dub package registry; default " ~ packageRegistry, &packageRegistry, - "deps-file|d", "Output Nix file with dependencies; defaults to " ~ deps, &deps, - "version", "Show version information.", &showVersion); - - if (showVersion) { - writeln(VERSION); - return 0; - } else if (result.helpWanted || args.length != 2 || args[1] != "save") { - defaultGetoptPrinter(`Usage: dub2nix [OPTIONS] COMMAND - -Create Nix derivations for Dub package dependencies. - -Commands: - save Write Nix files for Dub project - -Options:`, result.options); - return 0; - } - - try { - const nix = createNixDeps(readText(input)); - if (deps == "-") { - writeln(nix); - } else { - write(deps, nix.representation); - } - if (output) { - write("mkDub.nix", mkDubNix); - write(output, HEADER ~ ` -{ pkgs ? import <nixpkgs> {} }: -with import ./mkDub.nix { inherit pkgs; }; - -mkDubDerivation { - src = ./.; - # version = "0.0.1"; - # buildInputs = [ add any runtime deps here ]; -} -`); - } - return 0; - } catch (Exception e) { - debug { - // Only dump callstack in debug builds - writeln(e.toString()); - } else { - writeln("Error: ", e.message); - } - return 1; - } -} - -}//!unittest diff --git a/src/build_depends/shaHEADdep_dub2nix b/src/build_depends/shaHEADdep_dub2nix deleted file mode 100644 index 85c4d2c..0000000 --- a/src/build_depends/shaHEADdep_dub2nix +++ /dev/null @@ -1 +0,0 @@ -8f68d27c - dub2nix |