Revert "General JS cleanup"

.eslintrc.json

@@ -33,7 +33,7 @@
     "@typescript-eslint/array-type": "error",
     "@typescript-eslint/await-thenable": "error",
     "@typescript-eslint/ban-ts-comment": "error",
-    "camelcase": "error",
+    "camelcase": "off",
     "@typescript-eslint/consistent-type-assertions": "error",
     "@typescript-eslint/explicit-function-return-type": [
       "error",

.github/workflows/ci.yml

@@ -7,15 +7,6 @@ on:
   workflow_dispatch:
 
 jobs:
-  tests:
-    runs-on: ubuntu-22.04
-    needs:
-      - check-dist-up-to-date
-      - install-nix-linux
-      - install-nix-macos
-    steps:
-      - run: true
-
   check-dist-up-to-date:
     name: Check the dist/ folder is up to date
     runs-on: ubuntu-22.04
@@ -23,23 +14,12 @@ jobs:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@main
       - uses: DeterminateSystems/magic-nix-cache-action@main
-      - name: pnpm install
-        run: nix develop --command pnpm install
-      - name: prettier format
-        run: nix develop --command pnpm run check-fmt
-      - name: ESLint
-        run: nix develop --command pnpm run lint
-      - name: tsup build
-        run: nix develop --command pnpm run build
-      - name: ncc package
-        run: nix develop --command pnpm run package
-      - name: Git status
-        run: git status --porcelain=v1
-      - name: Ensure no staged changes
-        run: git diff --exit-code
-
-  install-nix-linux:
-    name: Run test suite for Linux systems
+      - run: nix develop --command pnpm install
+      - run: nix develop --command pnpm run all
+      - run: git status --porcelain=v1
+      - run: test $(git status --porcelain=v1 2>/dev/null | wc -l) -eq 0
+  run-test-suite:
+    name: Run test suite
     strategy:
       matrix:
         runner:
@@ -51,13 +31,14 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Install Nix
         uses: ./
         with:
           logger: pretty
           log-directives: nix_installer=trace
           backtrace: full
+      - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: echo $PATH
         run: echo $PATH
 
@@ -126,27 +107,21 @@ jobs:
           duration: 5m
           authorized-users: grahamc
 
-  install-nix-macos:
-    name: Run test suite for macOS systems
-    strategy:
-      matrix:
-        runner:
-          # x86_64-darwin
-          - macos-12
-          # aarch64-darwin
-          - macos-latest-xlarge
-    runs-on: ${{ matrix.runner }}
+  run-x86_64-darwin:
+    name: Run x86_64 Darwin
+    runs-on: macos-12
     permissions:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Install Nix
         uses: ./
         with:
           logger: pretty
           log-directives: nix_installer=trace
           backtrace: full
+      - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: echo $PATH
         run: echo $PATH
       - name: Test `nix` with `$GITHUB_PATH`
@@ -183,6 +158,10 @@ jobs:
           hello
           nix store gc
           nix run nixpkgs#hello
+      - name: Terminate the magic nix cache pre-reinstall
+        if: success() || failure()
+        run: |
+          pkill magic-nix-cache
       - name: Reinstall Nix
         uses: ./
         with:

README.md

@@ -27,7 +27,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - uses: DeterminateSystems/nix-installer-action@main
       - run: nix build .
 ```
@@ -50,7 +50,7 @@ jobs:
       id-token: "write"
       contents: "read"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - uses: DeterminateSystems/nix-installer-action@main
         with:
           flakehub: true

dist/index.d.ts

@@ -1,2 +0,0 @@
-
-export {  }

dist/main.d.ts

@@ -0,0 +1 @@
+export {};

dist/main.js

@@ -0,0 +1,799 @@
+import * as actions_core from "@actions/core";
+import * as github from "@actions/github";
+import * as actions_exec from "@actions/exec";
+import { access, writeFile, readFile } from "node:fs/promises";
+import { join } from "node:path";
+import fs from "node:fs";
+import { userInfo } from "node:os";
+import stringArgv from "string-argv";
+import * as path from "path";
+import { IdsToolbox } from "detsys-ts";
+import { randomUUID } from "node:crypto";
+class NixInstallerAction {
+    constructor() {
+        this.idslib = new IdsToolbox({
+            name: "nix-installer",
+            fetchStyle: "nix-style",
+            legacySourcePrefix: "nix-installer",
+        });
+        this.platform = get_nix_platform();
+        this.nix_package_url = action_input_string_or_null("nix-package-url");
+        this.backtrace = action_input_string_or_null("backtrace");
+        this.extra_args = action_input_string_or_null("extra-args");
+        this.extra_conf = action_input_multiline_string_or_null("extra-conf");
+        this.flakehub = action_input_bool("flakehub");
+        this.kvm = action_input_bool("kvm");
+        this.force_docker_shim = action_input_bool("force-docker-shim");
+        this.github_token = action_input_string_or_null("github-token");
+        this.github_server_url = action_input_string_or_null("github-server-url");
+        this.init = action_input_string_or_null("init");
+        this.local_root = action_input_string_or_null("local-root");
+        this.log_directives = action_input_string_or_null("log-directives");
+        this.logger = action_input_string_or_null("logger");
+        this.ssl_cert_file = action_input_string_or_null("ssl-cert-file");
+        this.proxy = action_input_string_or_null("proxy");
+        this.mac_case_sensitive = action_input_string_or_null("mac-case-sensitive");
+        this.mac_encrypt = action_input_string_or_null("mac-encrypt");
+        this.mac_root_disk = action_input_string_or_null("mac-root-disk");
+        this.mac_volume_label = action_input_string_or_null("mac-volume-label");
+        this.modify_profile = action_input_bool("modify-profile");
+        this.nix_build_group_id = action_input_number_or_null("nix-build-group-id");
+        this.nix_build_group_name = action_input_string_or_null("nix-build-group-name");
+        this.nix_build_user_base = action_input_number_or_null("nix_build-user-base");
+        this.nix_build_user_count = action_input_number_or_null("nix-build-user-count");
+        this.nix_build_user_prefix = action_input_string_or_null("nix-build-user-prefix");
+        this.planner = action_input_string_or_null("planner");
+        this.reinstall = action_input_bool("reinstall");
+        this.start_daemon = action_input_bool("start-daemon");
+        this.trust_runner_user = action_input_bool("trust-runner-user");
+    }
+    async detectAndForceDockerShim() {
+        // Detect if we're in a GHA runner which is Linux, doesn't have Systemd, and does have Docker.
+        // This is a common case in self-hosted runners, providers like [Namespace](https://namespace.so/),
+        // and especially GitHub Enterprise Server.
+        if (process.env.RUNNER_OS !== "Linux") {
+            if (this.force_docker_shim) {
+                actions_core.warning("Ignoring force-docker-shim which is set to true, as it is only supported on Linux.");
+                this.force_docker_shim = false;
+            }
+            return;
+        }
+        const systemdCheck = fs.statSync("/run/systemd/system", {
+            throwIfNoEntry: false,
+        });
+        if (systemdCheck?.isDirectory()) {
+            if (this.force_docker_shim) {
+                actions_core.warning("Systemd is detected, but ignoring it since force-docker-shim is enabled.");
+            }
+            else {
+                this.idslib.addFact("has_systemd", true);
+                return;
+            }
+        }
+        this.idslib.addFact("has_systemd", false);
+        actions_core.debug("Linux detected without systemd, testing for Docker with `docker info` as an alternative daemon supervisor.");
+        this.idslib.addFact("has_docker", false); // Set to false here, and only in the success case do we set it to true
+        let exit_code;
+        try {
+            exit_code = await actions_exec.exec("docker", ["info"], {
+                silent: true,
+                listeners: {
+                    stdout: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                    stderr: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                },
+            });
+        }
+        catch (e) {
+            actions_core.debug("Docker not detected, not enabling docker shim.");
+            return;
+        }
+        if (exit_code !== 0) {
+            if (this.force_docker_shim) {
+                actions_core.warning("docker info check failed, but trying anyway since force-docker-shim is enabled.");
+            }
+            else {
+                return;
+            }
+        }
+        this.idslib.addFact("has_docker", true);
+        if (!this.force_docker_shim &&
+            (await this.detectDockerWithMountedDockerSocket())) {
+            actions_core.debug("Detected a Docker container with a Docker socket mounted, not enabling docker shim.");
+            return;
+        }
+        actions_core.startGroup("Enabling the Docker shim for running Nix on Linux in CI without Systemd.");
+        if (this.init !== "none") {
+            actions_core.info(`Changing init from '${this.init}' to 'none'`);
+            this.init = "none";
+        }
+        if (this.planner !== "linux") {
+            actions_core.info(`Changing planner from '${this.planner}' to 'linux'`);
+            this.planner = "linux";
+        }
+        this.force_docker_shim = true;
+        actions_core.endGroup();
+    }
+    // Detect if we are running under `act` or some other system which is not using docker-in-docker,
+    // and instead using a mounted docker socket.
+    // In the case of the socket mount solution, the shim will cause issues since the given mount paths will
+    // equate to mount paths on the host, not mount paths to the docker container in question.
+    async detectDockerWithMountedDockerSocket() {
+        let cgroups_buffer;
+        try {
+            // If we are inside a docker container, the last line of `/proc/self/cgroup` should be
+            // 0::/docker/$SOME_ID
+            //
+            // If we are not, the line will likely be `0::/`
+            cgroups_buffer = await readFile("/proc/self/cgroup", {
+                encoding: "utf-8",
+            });
+        }
+        catch (e) {
+            actions_core.debug(`Did not detect \`/proc/self/cgroup\` existence, bailing on docker container ID detection:\n${e}`);
+            return false;
+        }
+        const cgroups = cgroups_buffer.trim().split("\n");
+        const last_cgroup = cgroups[cgroups.length - 1];
+        const last_cgroup_parts = last_cgroup.split(":");
+        const last_cgroup_path = last_cgroup_parts[last_cgroup_parts.length - 1];
+        if (!last_cgroup_path.includes("/docker/")) {
+            actions_core.debug("Did not detect a container ID, bailing on docker.sock detection");
+            return false;
+        }
+        // We are in a docker container, now to determine if this container is visible from
+        // the `docker` command, and if so, if there is a `docker.socket` mounted.
+        const last_cgroup_path_parts = last_cgroup_path.split("/");
+        const container_id = last_cgroup_path_parts[last_cgroup_path_parts.length - 1];
+        // If we cannot `docker inspect` this discovered container ID, we'll fall through to the `catch` below.
+        let stdout_buffer = "";
+        let stderr_buffer = "";
+        let exit_code;
+        try {
+            exit_code = await actions_exec.exec("docker", ["inspect", container_id], {
+                silent: true,
+                listeners: {
+                    stdout: (data) => {
+                        stdout_buffer += data.toString("utf-8");
+                    },
+                    stderr: (data) => {
+                        stderr_buffer += data.toString("utf-8");
+                    },
+                },
+            });
+        }
+        catch (e) {
+            actions_core.debug(`Could not execute \`docker inspect ${container_id}\`, bailing on docker container inspection:\n${e}`);
+            return false;
+        }
+        if (exit_code !== 0) {
+            actions_core.debug(`Unable to inspect detected docker container with id \`${container_id}\`, bailing on container inspection (exit ${exit_code}):\n${stderr_buffer}`);
+            return false;
+        }
+        const output = JSON.parse(stdout_buffer);
+        // `docker inspect $ID` prints an array containing objects.
+        // In our use case, we should only see 1 item in the array.
+        if (output.length !== 1) {
+            actions_core.debug(`Got \`docker inspect ${container_id}\` output which was not one item (was ${output.length}), bailing on docker.sock detection.`);
+            return false;
+        }
+        const item = output[0];
+        // On this array item we want the `Mounts` field, which is an array
+        // containing `{ Type, Source, Destination, Mode}`.
+        // We are looking for a `Destination` ending with `docker.sock`.
+        const mounts = item["Mounts"];
+        if (typeof mounts !== "object") {
+            actions_core.debug(`Got non-object in \`Mounts\` field of \`docker inspect ${container_id}\` output, bailing on docker.sock detection.`);
+            return false;
+        }
+        let found_docker_sock_mount = false;
+        for (const mount of mounts) {
+            const destination = mount["Destination"];
+            if (typeof destination === "string") {
+                if (destination.endsWith("docker.sock")) {
+                    found_docker_sock_mount = true;
+                    break;
+                }
+            }
+        }
+        return found_docker_sock_mount;
+    }
+    async executionEnvironment() {
+        const execution_env = {};
+        execution_env.NIX_INSTALLER_NO_CONFIRM = "true";
+        execution_env.NIX_INSTALLER_DIAGNOSTIC_ATTRIBUTION = JSON.stringify(this.idslib.getCorrelationHashes());
+        if (this.backtrace !== null) {
+            execution_env.RUST_BACKTRACE = this.backtrace;
+        }
+        if (this.modify_profile !== null) {
+            if (this.modify_profile) {
+                execution_env.NIX_INSTALLER_MODIFY_PROFILE = "true";
+            }
+            else {
+                execution_env.NIX_INSTALLER_MODIFY_PROFILE = "false";
+            }
+        }
+        if (this.nix_build_group_id !== null) {
+            execution_env.NIX_INSTALLER_NIX_BUILD_GROUP_ID = `${this.nix_build_group_id}`;
+        }
+        if (this.nix_build_group_name !== null) {
+            execution_env.NIX_INSTALLER_NIX_BUILD_GROUP_NAME =
+                this.nix_build_group_name;
+        }
+        if (this.nix_build_user_prefix !== null) {
+            execution_env.NIX_INSTALLER_NIX_BUILD_USER_PREFIX =
+                this.nix_build_user_prefix;
+        }
+        if (this.nix_build_user_count !== null) {
+            execution_env.NIX_INSTALLER_NIX_BUILD_USER_COUNT = `${this.nix_build_user_count}`;
+        }
+        if (this.nix_build_user_base !== null) {
+            execution_env.NIX_INSTALLER_NIX_BUILD_USER_ID_BASE = `${this.nix_build_user_count}`;
+        }
+        if (this.nix_package_url !== null) {
+            execution_env.NIX_INSTALLER_NIX_PACKAGE_URL = `${this.nix_package_url}`;
+        }
+        if (this.proxy !== null) {
+            execution_env.NIX_INSTALLER_PROXY = this.proxy;
+        }
+        if (this.ssl_cert_file !== null) {
+            execution_env.NIX_INSTALLER_SSL_CERT_FILE = this.ssl_cert_file;
+        }
+        execution_env.NIX_INSTALLER_DIAGNOSTIC_ENDPOINT =
+            this.idslib.getDiagnosticsUrl()?.toString() || "";
+        // TODO: Error if the user uses these on not-MacOS
+        if (this.mac_encrypt !== null) {
+            if (process.env.RUNNER_OS !== "macOS") {
+                throw new Error("`mac-encrypt` while `$RUNNER_OS` was not `macOS`");
+            }
+            execution_env.NIX_INSTALLER_ENCRYPT = this.mac_encrypt;
+        }
+        if (this.mac_case_sensitive !== null) {
+            if (process.env.RUNNER_OS !== "macOS") {
+                throw new Error("`mac-case-sensitive` while `$RUNNER_OS` was not `macOS`");
+            }
+            execution_env.NIX_INSTALLER_CASE_SENSITIVE = this.mac_case_sensitive;
+        }
+        if (this.mac_volume_label !== null) {
+            if (process.env.RUNNER_OS !== "macOS") {
+                throw new Error("`mac-volume-label` while `$RUNNER_OS` was not `macOS`");
+            }
+            execution_env.NIX_INSTALLER_VOLUME_LABEL = this.mac_volume_label;
+        }
+        if (this.mac_root_disk !== null) {
+            if (process.env.RUNNER_OS !== "macOS") {
+                throw new Error("`mac-root-disk` while `$RUNNER_OS` was not `macOS`");
+            }
+            execution_env.NIX_INSTALLER_ROOT_DISK = this.mac_root_disk;
+        }
+        if (this.logger !== null) {
+            execution_env.NIX_INSTALLER_LOGGER = this.logger;
+        }
+        if (this.log_directives !== null) {
+            execution_env.NIX_INSTALLER_LOG_DIRECTIVES = this.log_directives;
+        }
+        // TODO: Error if the user uses these on MacOS
+        if (this.init !== null) {
+            if (process.env.RUNNER_OS === "macOS") {
+                throw new Error("`init` is not a valid option when `$RUNNER_OS` is `macOS`");
+            }
+            execution_env.NIX_INSTALLER_INIT = this.init;
+        }
+        if (this.start_daemon !== null) {
+            if (this.start_daemon) {
+                execution_env.NIX_INSTALLER_START_DAEMON = "true";
+            }
+            else {
+                execution_env.NIX_INSTALLER_START_DAEMON = "false";
+            }
+        }
+        let extra_conf = "";
+        if (this.github_server_url !== null && this.github_token !== null) {
+            const server_url = this.github_server_url.replace("https://", "");
+            extra_conf += `access-tokens = ${server_url}=${this.github_token}`;
+            extra_conf += "\n";
+        }
+        if (this.trust_runner_user !== null) {
+            const user = userInfo().username;
+            if (user) {
+                extra_conf += `trusted-users = root ${user}`;
+            }
+            else {
+                extra_conf += `trusted-users = root`;
+            }
+            extra_conf += "\n";
+        }
+        if (this.flakehub) {
+            try {
+                const flakehub_netrc_file = await this.flakehub_login();
+                extra_conf += `netrc-file = ${flakehub_netrc_file}`;
+                extra_conf += "\n";
+            }
+            catch (e) {
+                actions_core.warning(`Failed to setup FlakeHub: ${e}`);
+            }
+        }
+        if (this.extra_conf !== null && this.extra_conf.length !== 0) {
+            extra_conf += this.extra_conf.join("\n");
+            extra_conf += "\n";
+        }
+        execution_env.NIX_INSTALLER_EXTRA_CONF = extra_conf;
+        if (process.env.ACT && !process.env.NOT_ACT) {
+            this.idslib.addFact("in_act", true);
+            actions_core.info("Detected `$ACT` environment, assuming this is a https://github.com/nektos/act created container, set `NOT_ACT=true` to override this. This will change the setting of the `init` to be compatible with `act`");
+            execution_env.NIX_INSTALLER_INIT = "none";
+        }
+        if (process.env.NSC_VM_ID && !process.env.NOT_NAMESPACE) {
+            this.idslib.addFact("in_namespace_so", true);
+            actions_core.info("Detected Namespace runner, assuming this is a https://namespace.so created container, set `NOT_NAMESPACE=true` to override this. This will change the setting of the `init` to be compatible with Namespace");
+            execution_env.NIX_INSTALLER_INIT = "none";
+        }
+        return execution_env;
+    }
+    async execute_install(binary_path) {
+        const execution_env = await this.executionEnvironment();
+        actions_core.debug(`Execution environment: ${JSON.stringify(execution_env, null, 4)}`);
+        const args = ["install"];
+        if (this.planner) {
+            this.idslib.addFact("nix_installer_planner", this.planner);
+            args.push(this.planner);
+        }
+        else {
+            this.idslib.addFact("nix_installer_planner", get_default_planner());
+            args.push(get_default_planner());
+        }
+        if (this.extra_args) {
+            const extra_args = stringArgv(this.extra_args);
+            args.concat(extra_args);
+        }
+        this.idslib.recordEvent("install_nix_start");
+        const exit_code = await actions_exec.exec(binary_path, args, {
+            env: {
+                ...execution_env,
+                ...process.env, // To get $PATH, etc
+            },
+        });
+        if (exit_code !== 0) {
+            this.idslib.recordEvent("install_nix_failure", {
+                exit_code,
+            });
+            throw new Error(`Non-zero exit code of \`${exit_code}\` detected`);
+        }
+        this.idslib.recordEvent("install_nix_success");
+        return exit_code;
+    }
+    async install() {
+        const existing_install = await this.detect_existing();
+        if (existing_install) {
+            if (this.reinstall) {
+                // We need to uninstall, then reinstall
+                actions_core.info("Nix was already installed, `reinstall` is set, uninstalling for a reinstall");
+                await this.execute_uninstall();
+            }
+            else {
+                // We're already installed, and not reinstalling, just set GITHUB_PATH and finish early
+                await this.set_github_path();
+                actions_core.info("Nix was already installed, using existing install");
+                return;
+            }
+        }
+        if (this.kvm) {
+            actions_core.startGroup("Configuring KVM");
+            if (await this.setup_kvm()) {
+                actions_core.endGroup();
+                actions_core.info("\u001b[32m Accelerated KVM is enabled \u001b[33m⚡️");
+                actions_core.exportVariable("DETERMINATE_NIX_KVM", "1");
+            }
+            else {
+                actions_core.endGroup();
+                actions_core.info("KVM is not available.");
+                actions_core.exportVariable("DETERMINATE_NIX_KVM", "0");
+            }
+        }
+        // Normal just doing of the install
+        actions_core.startGroup("Installing Nix");
+        const binary_path = await this.fetch_binary();
+        await this.execute_install(binary_path);
+        actions_core.endGroup();
+        if (this.force_docker_shim) {
+            await this.spawnDockerShim();
+        }
+        await this.set_github_path();
+    }
+    async spawnDockerShim() {
+        actions_core.startGroup("Configuring the Docker shim as the Nix Daemon's process supervisor");
+        const images = {
+            X64: path.join(__dirname, "/../docker-shim/amd64.tar.gz"),
+            ARM64: path.join(__dirname, "/../docker-shim/arm64.tar.gz"),
+        };
+        let arch;
+        if (process.env.RUNNER_ARCH === "X64") {
+            arch = "X64";
+        }
+        else if (process.env.RUNNER_ARCH === "ARM64") {
+            arch = "ARM64";
+        }
+        else {
+            throw Error("Architecture not supported in Docker shim mode.");
+        }
+        actions_core.debug("Loading image: determinate-nix-shim:latest...");
+        {
+            const exit_code = await actions_exec.exec("docker", ["image", "load", "--input", images[arch]], {
+                silent: true,
+                listeners: {
+                    stdout: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                    stderr: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                },
+            });
+            if (exit_code !== 0) {
+                throw new Error(`Failed to build the shim image, exit code: \`${exit_code}\``);
+            }
+        }
+        {
+            actions_core.debug("Starting the Nix daemon through Docker...");
+            this.idslib.recordEvent("start_docker_shim");
+            const exit_code = await actions_exec.exec("docker", [
+                "--log-level=debug",
+                "run",
+                "--detach",
+                "--privileged",
+                "--network=host",
+                "--userns=host",
+                "--pid=host",
+                "--mount",
+                "type=bind,src=/bin,dst=/bin,readonly",
+                "--mount",
+                "type=bind,src=/lib,dst=/lib,readonly",
+                "--mount",
+                "type=bind,src=/home,dst=/home,readonly",
+                "--mount",
+                "type=bind,src=/tmp,dst=/tmp",
+                "--mount",
+                "type=bind,src=/nix,dst=/nix",
+                "--mount",
+                "type=bind,src=/etc,dst=/etc,readonly",
+                "--restart",
+                "always",
+                "--init",
+                "--name",
+                `determinate-nix-shim-${this.idslib.getUniqueId()}-${randomUUID()}`,
+                "determinate-nix-shim:latest",
+            ], {
+                silent: true,
+                listeners: {
+                    stdline: (data) => {
+                        actions_core.saveState("docker_shim_container_id", data.trimEnd());
+                    },
+                    stdout: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                    stderr: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                },
+            });
+            if (exit_code !== 0) {
+                throw new Error(`Failed to start the Nix daemon through Docker, exit code: \`${exit_code}\``);
+            }
+        }
+        actions_core.endGroup();
+        return;
+    }
+    async cleanupDockerShim() {
+        const container_id = actions_core.getState("docker_shim_container_id");
+        if (container_id !== "") {
+            actions_core.startGroup("Cleaning up the Nix daemon's Docker shim");
+            let cleaned = false;
+            try {
+                await actions_exec.exec("docker", ["rm", "--force", container_id]);
+                cleaned = true;
+            }
+            catch {
+                actions_core.warning("failed to cleanup nix daemon container");
+            }
+            if (!cleaned) {
+                actions_core.info("trying to pkill the container's shim process");
+                try {
+                    await actions_exec.exec("pkill", [container_id]);
+                    cleaned = true;
+                }
+                catch {
+                    actions_core.warning("failed to forcibly kill the container's shim process");
+                }
+            }
+            if (cleaned) {
+                this.idslib.recordEvent("clean_up_docker_shim");
+            }
+            else {
+                actions_core.warning("Giving up on cleaning up the nix daemon container");
+            }
+            actions_core.endGroup();
+        }
+    }
+    async set_github_path() {
+        // Interim versions of the `nix-installer` crate may have already manipulated `$GITHUB_PATH`, as root even! Accessing that will be an error.
+        try {
+            const nix_var_nix_profile_path = "/nix/var/nix/profiles/default/bin";
+            const home_nix_profile_path = `${process.env.HOME}/.nix-profile/bin`;
+            actions_core.addPath(nix_var_nix_profile_path);
+            actions_core.addPath(home_nix_profile_path);
+            actions_core.info(`Added \`${nix_var_nix_profile_path}\` and \`${home_nix_profile_path}\` to \`$GITHUB_PATH\``);
+        }
+        catch (error) {
+            actions_core.info("Skipping setting $GITHUB_PATH in action, the `nix-installer` crate seems to have done this already. From `nix-installer` version 0.11.0 and up, this step is done in the action. Prior to 0.11.0, this was only done in the `nix-installer` binary.");
+        }
+    }
+    async flakehub_login() {
+        this.idslib.recordEvent("login_to_flakehub");
+        const netrc_path = `${process.env["RUNNER_TEMP"]}/determinate-nix-installer-netrc`;
+        const jwt = await actions_core.getIDToken("api.flakehub.com");
+        await writeFile(netrc_path, [
+            `machine api.flakehub.com login flakehub password ${jwt}`,
+            `machine flakehub.com login flakehub password ${jwt}`,
+        ].join("\n"));
+        actions_core.info("Logging in to FlakeHub.");
+        // the join followed by a match on ^... looks silly, but extra_config
+        // could contain multi-line values
+        if (this.extra_conf?.join("\n").match(/^netrc-file/m)) {
+            actions_core.warning("Logging in to FlakeHub conflicts with the Nix option `netrc-file`.");
+        }
+        return netrc_path;
+    }
+    async execute_uninstall() {
+        this.idslib.recordEvent("uninstall");
+        const exit_code = await actions_exec.exec(`/nix/nix-installer`, ["uninstall"], {
+            env: {
+                NIX_INSTALLER_NO_CONFIRM: "true",
+                ...process.env, // To get $PATH, etc
+            },
+        });
+        if (exit_code !== 0) {
+            throw new Error(`Non-zero exit code of \`${exit_code}\` detected`);
+        }
+        return exit_code;
+    }
+    async detect_existing() {
+        const receipt_path = "/nix/receipt.json";
+        try {
+            await access(receipt_path);
+            // There is a /nix/receipt.json
+            return true;
+        }
+        catch {
+            // No /nix/receipt.json
+            return false;
+        }
+    }
+    async setup_kvm() {
+        this.idslib.recordEvent("setup_kvm");
+        const current_user = userInfo();
+        const is_root = current_user.uid === 0;
+        const maybe_sudo = is_root ? "" : "sudo";
+        const kvm_rules = "/etc/udev/rules.d/99-determinate-nix-installer-kvm.rules";
+        try {
+            const write_file_exit_code = await actions_exec.exec("sh", [
+                "-c",
+                `echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | ${maybe_sudo} tee ${kvm_rules} > /dev/null`,
+            ], {
+                silent: true,
+                listeners: {
+                    stdout: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                    stderr: (data) => {
+                        const trimmed = data.toString("utf-8").trimEnd();
+                        if (trimmed.length >= 0) {
+                            actions_core.debug(trimmed);
+                        }
+                    },
+                },
+            });
+            if (write_file_exit_code !== 0) {
+                throw new Error(`Non-zero exit code of \`${write_file_exit_code}\` detected while writing '${kvm_rules}'`);
+            }
+            const debug_root_run_throw = async (action, command, args) => {
+                if (!is_root) {
+                    args = [command, ...args];
+                    command = "sudo";
+                }
+                const reload_exit_code = await actions_exec.exec(command, args, {
+                    silent: true,
+                    listeners: {
+                        stdout: (data) => {
+                            const trimmed = data.toString("utf-8").trimEnd();
+                            if (trimmed.length >= 0) {
+                                actions_core.debug(trimmed);
+                            }
+                        },
+                        stderr: (data) => {
+                            const trimmed = data.toString("utf-8").trimEnd();
+                            if (trimmed.length >= 0) {
+                                actions_core.debug(trimmed);
+                            }
+                        },
+                    },
+                });
+                if (reload_exit_code !== 0) {
+                    throw new Error(`Non-zero exit code of \`${reload_exit_code}\` detected while ${action}.`);
+                }
+            };
+            await debug_root_run_throw("reloading udev rules", "udevadm", [
+                "control",
+                "--reload-rules",
+            ]);
+            await debug_root_run_throw("triggering udev against kvm", "udevadm", [
+                "trigger",
+                "--name-match=kvm",
+            ]);
+            return true;
+        }
+        catch (error) {
+            if (is_root) {
+                await actions_exec.exec("rm", ["-f", kvm_rules]);
+            }
+            else {
+                await actions_exec.exec("sudo", ["rm", "-f", kvm_rules]);
+            }
+            return false;
+        }
+    }
+    async fetch_binary() {
+        if (!this.local_root) {
+            return await this.idslib.fetchExecutable();
+        }
+        else {
+            const local_path = join(this.local_root, `nix-installer-${this.platform}`);
+            actions_core.info(`Using binary ${local_path}`);
+            return local_path;
+        }
+    }
+    async report_overall() {
+        try {
+            this.idslib.recordEvent("conclude_workflow", {
+                conclusion: await this.get_workflow_conclusion(),
+            });
+        }
+        catch (error) {
+            actions_core.debug(`Error submitting post-run diagnostics report: ${error}`);
+        }
+    }
+    async get_workflow_conclusion() {
+        if (this.github_token == null) {
+            return undefined;
+        }
+        try {
+            const octokit = github.getOctokit(this.github_token);
+            const jobs = await octokit.paginate(octokit.rest.actions.listJobsForWorkflowRun, {
+                owner: github.context.repo.owner,
+                repo: github.context.repo.repo,
+                run_id: github.context.runId,
+            });
+            actions_core.debug(`awaited jobs: ${jobs}`);
+            const job = jobs
+                .filter((candidate) => candidate.name === github.context.job)
+                .at(0);
+            if (job === undefined) {
+                return "no-jobs";
+            }
+            const outcomes = (job.steps || []).map((j) => j.conclusion || "unknown");
+            // Possible values: success, failure, cancelled, or skipped
+            // from: https://docs.github.com/en/actions/learn-github-actions/contexts
+            if (outcomes.includes("failure")) {
+                // Any failures fails the job
+                return "failure";
+            }
+            if (outcomes.includes("cancelled")) {
+                // Any cancellations cancels the job
+                return "cancelled";
+            }
+            // Assume success if no jobs failed or were canceled
+            return "success";
+        }
+        catch (error) {
+            actions_core.debug(`Error determining final disposition: ${error}`);
+            return "unavailable";
+        }
+    }
+}
+function get_nix_platform() {
+    const env_os = process.env.RUNNER_OS;
+    const env_arch = process.env.RUNNER_ARCH;
+    if (env_os === "macOS" && env_arch === "X64") {
+        return "x86_64-darwin";
+    }
+    else if (env_os === "macOS" && env_arch === "ARM64") {
+        return "aarch64-darwin";
+    }
+    else if (env_os === "Linux" && env_arch === "X64") {
+        return "x86_64-linux";
+    }
+    else if (env_os === "Linux" && env_arch === "ARM64") {
+        return "aarch64-linux";
+    }
+    else {
+        throw new Error(`Unsupported \`RUNNER_OS\` (currently \`${env_os}\`) and \`RUNNER_ARCH\` (currently \`${env_arch}\`)  combination`);
+    }
+}
+function get_default_planner() {
+    const env_os = process.env.RUNNER_OS;
+    if (env_os === "macOS") {
+        return "macos";
+    }
+    else if (env_os === "Linux") {
+        return "linux";
+    }
+    else {
+        throw new Error(`Unsupported \`RUNNER_OS\` (currently \`${env_os}\`)`);
+    }
+}
+function action_input_string_or_null(name) {
+    const value = actions_core.getInput(name);
+    if (value === "") {
+        return null;
+    }
+    else {
+        return value;
+    }
+}
+function action_input_multiline_string_or_null(name) {
+    const value = actions_core.getMultilineInput(name);
+    if (value.length === 0) {
+        return null;
+    }
+    else {
+        return value;
+    }
+}
+function action_input_number_or_null(name) {
+    const value = actions_core.getInput(name);
+    if (value === "") {
+        return null;
+    }
+    else {
+        return Number(value);
+    }
+}
+function action_input_bool(name) {
+    return actions_core.getBooleanInput(name);
+}
+function main() {
+    const installer = new NixInstallerAction();
+    installer.idslib.onMain(async () => {
+        await installer.detectAndForceDockerShim();
+        await installer.install();
+    });
+    installer.idslib.onPost(async () => {
+        await installer.cleanupDockerShim();
+        await installer.report_overall();
+    });
+    installer.idslib.execute();
+}
+main();

package.json

@@ -1,14 +1,13 @@
 {
   "name": "nix-installer-action",
   "version": "1.0.0",
-  "description": "You can use [`nix-installer`](https://github.com/DeterminateSystems/nix-installer) as a Github Action:",
-  "main": "./dist/index.js",
-  "types": "./dist/index.d.ts",
+  "description": "You can use [`nix-installer`](https://github.com/DeterminateSystems/nix-installer) as a Github action:",
+  "main": "./dist/main.js",
+  "types": "./dist/main.d.ts",
   "type": "module",
   "scripts": {
-    "build": "tsup",
+    "build": "tsc",
     "format": "prettier --write .",
-    "check-fmt": "prettier --check .",
     "lint": "eslint src/**/*.ts",
     "package": "ncc build",
     "all": "pnpm run format && pnpm run lint && pnpm run build && pnpm run package"
@@ -28,14 +27,16 @@
     "@actions/core": "^1.10.1",
     "@actions/exec": "^1.1.1",
     "@actions/github": "^5.1.1",
+    "@actions/tool-cache": "^2.0.1",
     "detsys-ts": "github:DeterminateSystems/detsys-ts",
+    "fetch-retry": "^5.0.6",
     "string-argv": "^0.3.2"
   },
   "devDependencies": {
     "@trivago/prettier-plugin-sort-imports": "^4.3.0",
-    "@types/node": "^20.12.11",
+    "@types/node": "^20.12.7",
     "@types/uuid": "^9.0.8",
-    "@typescript-eslint/eslint-plugin": "^7.8.0",
+    "@typescript-eslint/eslint-plugin": "^7.6.0",
     "@vercel/ncc": "^0.38.1",
     "eslint": "^8.57.0",
     "eslint-import-resolver-typescript": "^3.6.1",

tsup.config.ts

@@ -1,15 +0,0 @@
-import { defineConfig } from "tsup";
-import { name } from "./package.json";
-
-export default defineConfig({
-  name,
-  entry: ["src/index.ts"],
-  format: ["esm"],
-  target: "node20",
-  bundle: true,
-  splitting: false,
-  clean: true,
-  dts: {
-    resolve: true,
-  },
-});