diff --git a/setup/dist/index.js b/setup/dist/index.js
index d5730606..094e1483 100644
--- a/setup/dist/index.js
+++ b/setup/dist/index.js
@@ -2409,16 +2409,18 @@ exports.create = create;
  * Computes the sha256 hash of a glob
  *
  * @param patterns  Patterns separated by newlines
+ * @param currentWorkspace  Workspace used when matching files
  * @param options   Glob options
+ * @param verbose   Enables verbose logging
  */
-function hashFiles(patterns, options, verbose = false) {
+function hashFiles(patterns, currentWorkspace = '', options, verbose = false) {
     return __awaiter(this, void 0, void 0, function* () {
         let followSymbolicLinks = true;
         if (options && typeof options.followSymbolicLinks === 'boolean') {
             followSymbolicLinks = options.followSymbolicLinks;
         }
         const globber = yield create(patterns, { followSymbolicLinks });
-        return internal_hash_files_1.hashFiles(globber, verbose);
+        return internal_hash_files_1.hashFiles(globber, currentWorkspace, verbose);
     });
 }
 exports.hashFiles = hashFiles;
@@ -2778,13 +2780,15 @@ const fs = __importStar(__nccwpck_require__(7147));
 const stream = __importStar(__nccwpck_require__(2781));
 const util = __importStar(__nccwpck_require__(3837));
 const path = __importStar(__nccwpck_require__(1017));
-function hashFiles(globber, verbose = false) {
+function hashFiles(globber, currentWorkspace, verbose = false) {
     var e_1, _a;
     var _b;
     return __awaiter(this, void 0, void 0, function* () {
         const writeDelegate = verbose ? core.info : core.debug;
         let hasMatch = false;
-        const githubWorkspace = (_b = process.env['GITHUB_WORKSPACE']) !== null && _b !== void 0 ? _b : process.cwd();
+        const githubWorkspace = currentWorkspace
+            ? currentWorkspace
+            : (_b = process.env['GITHUB_WORKSPACE']) !== null && _b !== void 0 ? _b : process.cwd();
         const result = crypto.createHash('sha256');
         let count = 0;
         try {
@@ -13313,7 +13317,6 @@ const path_1 = __nccwpck_require__(1017);
 const opts_1 = __nccwpck_require__(8131);
 const process_1 = __importDefault(__nccwpck_require__(7282));
 const glob = __importStar(__nccwpck_require__(8090));
-const fs = __importStar(__nccwpck_require__(7147));
 const compare_versions_1 = __nccwpck_require__(4773); // compareVersions can be used in the sense of >
 // Don't throw on non-zero.
 const exec = async (cmd, args) => (0, exec_1.exec)(cmd, args, { ignoreReturnCode: true });
@@ -13359,44 +13362,65 @@ async function isInstalled(tool, version, os) {
     const toolPath = tc.find(tool, version);
     if (toolPath)
         return success(tool, version, toolPath, os);
-    const ghcupPath = `${process_1.default.env.HOME}/.ghcup${tool === 'ghc' ? `/ghc/${version}` : ''}/bin`;
+    let ghcupPath = `${process_1.default.env.HOME}/.ghcup${tool === 'ghc' ? `/ghc/${version}` : ''}/bin`;
+    if (os === 'win32') {
+        ghcupPath = 'C:/ghcup/bin';
+    }
     const v = aptVersion(tool, version);
     const aptPath = `/opt/${tool}/${v}/bin`;
-    const chocoPath = await getChocoPath(tool, version, (0, opts_1.releaseRevision)(version, tool, os));
     const locations = {
         stack: [],
         cabal: {
-            win32: [chocoPath],
-            linux: [aptPath],
-            darwin: []
+            win32: [ghcupPath],
+            linux: [ghcupPath, aptPath],
+            darwin: [ghcupPath]
         }[os],
         ghc: {
-            win32: [chocoPath],
-            linux: [aptPath, ghcupPath],
+            win32: [ghcupPath],
+            linux: [ghcupPath, aptPath],
             darwin: [ghcupPath]
         }[os]
     };
+    core.info(`isInstalled ${tool} ${version} ${locations[tool]}`);
+    const f = await exec(await ghcupBin(os), ['whereis', tool, version]);
+    core.info(`isInstalled whereis ${f}`);
     for (const p of locations[tool]) {
+        core.info(`Attempting to access tool ${tool} at location ${p}`);
         const installedPath = await fs_1.promises
             .access(p)
             .then(() => p)
             .catch(() => undefined);
+        if (installedPath == undefined) {
+            core.info(`Failed to access tool ${tool} at location ${p}`);
+        }
+        else {
+            core.info(`Succeeded accessing tool ${tool} at location ${p}`);
+        }
         if (installedPath) {
             // Make sure that the correct ghc is used, even if ghcup has set a
             // default prior to this action being ran.
-            if (tool === 'ghc' && installedPath === ghcupPath)
-                await exec(await ghcupBin(os), ['set', tool, version]);
-            return success(tool, version, installedPath, os);
-        }
-    }
-    if (tool === 'cabal' && os !== 'win32') {
-        const installedPath = await fs_1.promises
-            .access(`${ghcupPath}/cabal-${version}`)
-            .then(() => ghcupPath)
-            .catch(() => undefined);
-        if (installedPath) {
-            await exec(await ghcupBin(os), ['set', tool, version]);
-            return success(tool, version, installedPath, os);
+            core.info(`isInstalled installedPath: ${installedPath}`);
+            if (installedPath === ghcupPath) {
+                // If the result of this `ghcup set` is non-zero, the version we want
+                // is probably not actually installed
+                const ghcupSetResult = await exec(await ghcupBin(os), [
+                    'set',
+                    tool,
+                    version
+                ]);
+                if (ghcupSetResult == 0)
+                    return success(tool, version, installedPath, os);
+            }
+            else {
+                const cabalPath = await fs_1.promises
+                    .access(`${installedPath}/cabal-${version}`)
+                    .then(() => p)
+                    .catch(() => undefined);
+                core.info(`isInstalled cabalPath ${cabalPath}`);
+                if (cabalPath) {
+                    return success(tool, version, installedPath, os);
+                }
+            }
         }
     }
     return false;
@@ -13432,7 +13456,7 @@ async function installTool(tool, version, os) {
             await apt(tool, version);
             break;
         case 'win32':
-            await choco(tool, version);
+            await ghcup(tool, version, os);
             break;
         case 'darwin':
             await ghcup(tool, version, os);
@@ -13499,31 +13523,11 @@ async function apt(tool, version) {
     // Ignore the return code so we can fall back to ghcup
     await exec(`sudo -- sh -c "add-apt-repository -y ppa:hvr/ghc && apt-get update && apt-get -y install ${toolName}-${v}"`);
 }
-async function choco(tool, version) {
-    core.info(`Attempting to install ${tool} ${version} using chocolatey`);
-    // E.g. GHC version 7.10.3 on Chocolatey is revision 7.10.3.1.
-    const revision = (0, opts_1.releaseRevision)(version, tool, 'win32');
-    // Choco tries to invoke `add-path` command on earlier versions of ghc, which has been deprecated and fails the step, so disable command execution during this.
-    console.log('::stop-commands::SetupHaskellStopCommands');
-    const args = [
-        'choco',
-        'install',
-        tool,
-        '--version',
-        revision,
-        '-m',
-        '--no-progress',
-        core.isDebug() ? '-d' : '-r'
-    ];
-    if ((await exec('powershell', args)) !== 0)
-        await exec('powershell', [...args, '--pre']);
-    console.log('::SetupHaskellStopCommands::'); // Re-enable command execution
-    // Add GHC to path automatically because it does not add until the end of the step and we check the path.
-    const chocoPath = await getChocoPath(tool, version, revision);
-    if (tool == 'ghc')
-        core.addPath(chocoPath);
-}
 async function ghcupBin(os) {
+    core.info(`ghcupBin : ${os}`);
+    if (os === 'win32') {
+        return 'ghcup';
+    }
     const cachedBin = tc.find('ghcup', opts_1.ghcup_version);
     if (cachedBin)
         return (0, path_1.join)(cachedBin, 'ghcup');
@@ -13557,28 +13561,6 @@ async function ghcupGHCHead() {
     if (returnCode === 0)
         await exec(bin, ['set', 'ghc', 'head']);
 }
-async function getChocoPath(tool, version, revision) {
-    // Environment variable 'ChocolateyToolsLocation' will be added to Hosted images soon
-    // fallback to C:\\tools for now until variable is available
-    core.debug(`getChocoPath(): ChocolateyToolsLocation = ${process_1.default.env.ChocolateyToolsLocation}`);
-    const chocoToolsLocation = process_1.default.env.ChocolateyToolsLocation ??
-        (0, path_1.join)(`${process_1.default.env.SystemDrive}`, 'tools');
-    // choco packages GHC 9.x are installed on different path (C:\\tools\ghc-9.0.1)
-    let chocoToolPath = (0, path_1.join)(chocoToolsLocation, `${tool}-${version}`);
-    // choco packages GHC < 9.x
-    if (!fs.existsSync(chocoToolPath)) {
-        chocoToolPath = (0, path_1.join)(`${process_1.default.env.ChocolateyInstall}`, 'lib', `${tool}.${revision}`);
-    }
-    core.debug(`getChocoPath(): chocoToolPath = ${chocoToolPath}`);
-    const pattern = `${chocoToolPath}/**/${tool}.exe`;
-    const globber = await glob.create(pattern);
-    for await (const file of globber.globGenerator()) {
-        core.debug(`getChocoPath(): found ${tool} at ${file}`);
-        return (0, path_1.dirname)(file);
-    }
-    core.debug(`getChocoPath(): cannot find binary for ${tool}`);
-    return '<not-found>';
-}
 
 
 /***/ }),
@@ -13662,6 +13644,34 @@ const rv = __importStar(__nccwpck_require__(8738));
 exports.release_revisions = rv;
 exports.supported_versions = sv;
 exports.ghcup_version = sv.ghcup[0]; // Known to be an array of length 1
+/**
+ * Reads the example `actions.yml` file and selects the `inputs` key. The result
+ * will be a key-value map of the following shape:
+ * ```
+ * {
+ *   'ghc-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'cabal-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'stack-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'enable-stack': {
+ *     required: false,
+ *     default: 'latest'
+ *   },
+ *   ...
+ * }
+ * ```
+ */
 exports.yamlInputs = (0, js_yaml_1.load)((0, fs_1.readFileSync)((0, path_1.join)(__dirname, '..', 'action.yml'), 'utf8')
 // The action.yml file structure is statically known.
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -13848,6 +13858,9 @@ async function run(inputs) {
         core.info('Preparing to setup a Haskell environment');
         const os = process.platform;
         const opts = (0, opts_1.getOpts)((0, opts_1.getDefaults)(os), os, inputs);
+        core.debug(`run: inputs = ${JSON.stringify(inputs)}`);
+        core.debug(`run: os     = ${JSON.stringify(os)}`);
+        core.debug(`run: opts   = ${JSON.stringify(opts)}`);
         if (opts.ghcup.releaseChannel) {
             await core.group(`Preparing ghcup environment`, async () => (0, installer_1.addGhcupReleaseChannel)(opts.ghcup.releaseChannel, os));
         }
diff --git a/setup/lib/installer.js b/setup/lib/installer.js
index 83b99aa5..43e9e67b 100644
--- a/setup/lib/installer.js
+++ b/setup/lib/installer.js
@@ -36,7 +36,6 @@ const path_1 = require("path");
 const opts_1 = require("./opts");
 const process_1 = __importDefault(require("process"));
 const glob = __importStar(require("@actions/glob"));
-const fs = __importStar(require("fs"));
 const compare_versions_1 = require("compare-versions"); // compareVersions can be used in the sense of >
 // Don't throw on non-zero.
 const exec = async (cmd, args) => (0, exec_1.exec)(cmd, args, { ignoreReturnCode: true });
@@ -82,44 +81,65 @@ async function isInstalled(tool, version, os) {
     const toolPath = tc.find(tool, version);
     if (toolPath)
         return success(tool, version, toolPath, os);
-    const ghcupPath = `${process_1.default.env.HOME}/.ghcup${tool === 'ghc' ? `/ghc/${version}` : ''}/bin`;
+    let ghcupPath = `${process_1.default.env.HOME}/.ghcup${tool === 'ghc' ? `/ghc/${version}` : ''}/bin`;
+    if (os === 'win32') {
+        ghcupPath = 'C:/ghcup/bin';
+    }
     const v = aptVersion(tool, version);
     const aptPath = `/opt/${tool}/${v}/bin`;
-    const chocoPath = await getChocoPath(tool, version, (0, opts_1.releaseRevision)(version, tool, os));
     const locations = {
         stack: [],
         cabal: {
-            win32: [chocoPath],
-            linux: [aptPath],
-            darwin: []
+            win32: [ghcupPath],
+            linux: [ghcupPath, aptPath],
+            darwin: [ghcupPath]
         }[os],
         ghc: {
-            win32: [chocoPath],
-            linux: [aptPath, ghcupPath],
+            win32: [ghcupPath],
+            linux: [ghcupPath, aptPath],
             darwin: [ghcupPath]
         }[os]
     };
+    core.info(`isInstalled ${tool} ${version} ${locations[tool]}`);
+    const f = await exec(await ghcupBin(os), ['whereis', tool, version]);
+    core.info(`isInstalled whereis ${f}`);
     for (const p of locations[tool]) {
+        core.info(`Attempting to access tool ${tool} at location ${p}`);
         const installedPath = await fs_1.promises
             .access(p)
             .then(() => p)
             .catch(() => undefined);
+        if (installedPath == undefined) {
+            core.info(`Failed to access tool ${tool} at location ${p}`);
+        }
+        else {
+            core.info(`Succeeded accessing tool ${tool} at location ${p}`);
+        }
         if (installedPath) {
             // Make sure that the correct ghc is used, even if ghcup has set a
             // default prior to this action being ran.
-            if (tool === 'ghc' && installedPath === ghcupPath)
-                await exec(await ghcupBin(os), ['set', tool, version]);
-            return success(tool, version, installedPath, os);
-        }
-    }
-    if (tool === 'cabal' && os !== 'win32') {
-        const installedPath = await fs_1.promises
-            .access(`${ghcupPath}/cabal-${version}`)
-            .then(() => ghcupPath)
-            .catch(() => undefined);
-        if (installedPath) {
-            await exec(await ghcupBin(os), ['set', tool, version]);
-            return success(tool, version, installedPath, os);
+            core.info(`isInstalled installedPath: ${installedPath}`);
+            if (installedPath === ghcupPath) {
+                // If the result of this `ghcup set` is non-zero, the version we want
+                // is probably not actually installed
+                const ghcupSetResult = await exec(await ghcupBin(os), [
+                    'set',
+                    tool,
+                    version
+                ]);
+                if (ghcupSetResult == 0)
+                    return success(tool, version, installedPath, os);
+            }
+            else {
+                const cabalPath = await fs_1.promises
+                    .access(`${installedPath}/cabal-${version}`)
+                    .then(() => p)
+                    .catch(() => undefined);
+                core.info(`isInstalled cabalPath ${cabalPath}`);
+                if (cabalPath) {
+                    return success(tool, version, installedPath, os);
+                }
+            }
         }
     }
     return false;
@@ -155,7 +175,7 @@ async function installTool(tool, version, os) {
             await apt(tool, version);
             break;
         case 'win32':
-            await choco(tool, version);
+            await ghcup(tool, version, os);
             break;
         case 'darwin':
             await ghcup(tool, version, os);
@@ -222,31 +242,11 @@ async function apt(tool, version) {
     // Ignore the return code so we can fall back to ghcup
     await exec(`sudo -- sh -c "add-apt-repository -y ppa:hvr/ghc && apt-get update && apt-get -y install ${toolName}-${v}"`);
 }
-async function choco(tool, version) {
-    core.info(`Attempting to install ${tool} ${version} using chocolatey`);
-    // E.g. GHC version 7.10.3 on Chocolatey is revision 7.10.3.1.
-    const revision = (0, opts_1.releaseRevision)(version, tool, 'win32');
-    // Choco tries to invoke `add-path` command on earlier versions of ghc, which has been deprecated and fails the step, so disable command execution during this.
-    console.log('::stop-commands::SetupHaskellStopCommands');
-    const args = [
-        'choco',
-        'install',
-        tool,
-        '--version',
-        revision,
-        '-m',
-        '--no-progress',
-        core.isDebug() ? '-d' : '-r'
-    ];
-    if ((await exec('powershell', args)) !== 0)
-        await exec('powershell', [...args, '--pre']);
-    console.log('::SetupHaskellStopCommands::'); // Re-enable command execution
-    // Add GHC to path automatically because it does not add until the end of the step and we check the path.
-    const chocoPath = await getChocoPath(tool, version, revision);
-    if (tool == 'ghc')
-        core.addPath(chocoPath);
-}
 async function ghcupBin(os) {
+    core.info(`ghcupBin : ${os}`);
+    if (os === 'win32') {
+        return 'ghcup';
+    }
     const cachedBin = tc.find('ghcup', opts_1.ghcup_version);
     if (cachedBin)
         return (0, path_1.join)(cachedBin, 'ghcup');
@@ -280,25 +280,3 @@ async function ghcupGHCHead() {
     if (returnCode === 0)
         await exec(bin, ['set', 'ghc', 'head']);
 }
-async function getChocoPath(tool, version, revision) {
-    // Environment variable 'ChocolateyToolsLocation' will be added to Hosted images soon
-    // fallback to C:\\tools for now until variable is available
-    core.debug(`getChocoPath(): ChocolateyToolsLocation = ${process_1.default.env.ChocolateyToolsLocation}`);
-    const chocoToolsLocation = process_1.default.env.ChocolateyToolsLocation ??
-        (0, path_1.join)(`${process_1.default.env.SystemDrive}`, 'tools');
-    // choco packages GHC 9.x are installed on different path (C:\\tools\ghc-9.0.1)
-    let chocoToolPath = (0, path_1.join)(chocoToolsLocation, `${tool}-${version}`);
-    // choco packages GHC < 9.x
-    if (!fs.existsSync(chocoToolPath)) {
-        chocoToolPath = (0, path_1.join)(`${process_1.default.env.ChocolateyInstall}`, 'lib', `${tool}.${revision}`);
-    }
-    core.debug(`getChocoPath(): chocoToolPath = ${chocoToolPath}`);
-    const pattern = `${chocoToolPath}/**/${tool}.exe`;
-    const globber = await glob.create(pattern);
-    for await (const file of globber.globGenerator()) {
-        core.debug(`getChocoPath(): found ${tool} at ${file}`);
-        return (0, path_1.dirname)(file);
-    }
-    core.debug(`getChocoPath(): cannot find binary for ${tool}`);
-    return '<not-found>';
-}
diff --git a/setup/lib/opts.d.ts b/setup/lib/opts.d.ts
index 9fa53c54..5b5a3603 100644
--- a/setup/lib/opts.d.ts
+++ b/setup/lib/opts.d.ts
@@ -41,6 +41,34 @@ export type Defaults = Record<Tool, Version> & {
         };
     };
 };
+/**
+ * Reads the example `actions.yml` file and selects the `inputs` key. The result
+ * will be a key-value map of the following shape:
+ * ```
+ * {
+ *   'ghc-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'cabal-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'stack-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'enable-stack': {
+ *     required: false,
+ *     default: 'latest'
+ *   },
+ *   ...
+ * }
+ * ```
+ */
 export declare const yamlInputs: Record<string, {
     default: string;
 }>;
diff --git a/setup/lib/opts.js b/setup/lib/opts.js
index 5a388737..4ec91ee4 100644
--- a/setup/lib/opts.js
+++ b/setup/lib/opts.js
@@ -33,6 +33,34 @@ const rv = __importStar(require("./release-revisions.json"));
 exports.release_revisions = rv;
 exports.supported_versions = sv;
 exports.ghcup_version = sv.ghcup[0]; // Known to be an array of length 1
+/**
+ * Reads the example `actions.yml` file and selects the `inputs` key. The result
+ * will be a key-value map of the following shape:
+ * ```
+ * {
+ *   'ghc-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'cabal-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'stack-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'enable-stack': {
+ *     required: false,
+ *     default: 'latest'
+ *   },
+ *   ...
+ * }
+ * ```
+ */
 exports.yamlInputs = (0, js_yaml_1.load)((0, fs_1.readFileSync)((0, path_1.join)(__dirname, '..', 'action.yml'), 'utf8')
 // The action.yml file structure is statically known.
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
diff --git a/setup/lib/setup-haskell.js b/setup/lib/setup-haskell.js
index 0c831268..2d3fc194 100644
--- a/setup/lib/setup-haskell.js
+++ b/setup/lib/setup-haskell.js
@@ -48,6 +48,9 @@ async function run(inputs) {
         core.info('Preparing to setup a Haskell environment');
         const os = process.platform;
         const opts = (0, opts_1.getOpts)((0, opts_1.getDefaults)(os), os, inputs);
+        core.debug(`run: inputs = ${JSON.stringify(inputs)}`);
+        core.debug(`run: os     = ${JSON.stringify(os)}`);
+        core.debug(`run: opts   = ${JSON.stringify(opts)}`);
         if (opts.ghcup.releaseChannel) {
             await core.group(`Preparing ghcup environment`, async () => (0, installer_1.addGhcupReleaseChannel)(opts.ghcup.releaseChannel, os));
         }
diff --git a/setup/src/installer.ts b/setup/src/installer.ts
index 05755ade..ed70d11e 100644
--- a/setup/src/installer.ts
+++ b/setup/src/installer.ts
@@ -3,11 +3,10 @@ import {exec as e} from '@actions/exec';
 import {which} from '@actions/io';
 import * as tc from '@actions/tool-cache';
 import {promises as afs} from 'fs';
-import {join, dirname} from 'path';
-import {ghcup_version, OS, Tool, releaseRevision} from './opts';
+import {join} from 'path';
+import {ghcup_version, OS, Tool} from './opts';
 import process from 'process';
 import * as glob from '@actions/glob';
-import * as fs from 'fs';
 import {compareVersions} from 'compare-versions'; // compareVersions can be used in the sense of >
 
 // Don't throw on non-zero.
@@ -79,57 +78,69 @@ async function isInstalled(
   const toolPath = tc.find(tool, version);
   if (toolPath) return success(tool, version, toolPath, os);
 
-  const ghcupPath = `${process.env.HOME}/.ghcup${
+  let ghcupPath = `${process.env.HOME}/.ghcup${
     tool === 'ghc' ? `/ghc/${version}` : ''
   }/bin`;
+  if (os === 'win32') {
+    ghcupPath = 'C:/ghcup/bin';
+  }
   const v = aptVersion(tool, version);
   const aptPath = `/opt/${tool}/${v}/bin`;
 
-  const chocoPath = await getChocoPath(
-    tool,
-    version,
-    releaseRevision(version, tool, os)
-  );
-
   const locations = {
     stack: [], // Always installed into the tool cache
     cabal: {
-      win32: [chocoPath],
-      linux: [aptPath],
-      darwin: []
+      win32: [ghcupPath],
+      linux: [ghcupPath, aptPath],
+      darwin: [ghcupPath]
     }[os],
     ghc: {
-      win32: [chocoPath],
-      linux: [aptPath, ghcupPath],
+      win32: [ghcupPath],
+      linux: [ghcupPath, aptPath],
       darwin: [ghcupPath]
     }[os]
   };
+  core.info(`isInstalled ${tool} ${version} ${locations[tool]}`);
+  const f = await exec(await ghcupBin(os), ['whereis', tool, version]);
+  core.info(`isInstalled whereis ${f}`);
 
   for (const p of locations[tool]) {
+    core.info(`Attempting to access tool ${tool} at location ${p}`);
     const installedPath = await afs
       .access(p)
       .then(() => p)
       .catch(() => undefined);
 
-    if (installedPath) {
-      // Make sure that the correct ghc is used, even if ghcup has set a
-      // default prior to this action being ran.
-      if (tool === 'ghc' && installedPath === ghcupPath)
-        await exec(await ghcupBin(os), ['set', tool, version]);
-
-      return success(tool, version, installedPath, os);
+    if (installedPath == undefined) {
+      core.info(`Failed to access tool ${tool} at location ${p}`);
+    } else {
+      core.info(`Succeeded accessing tool ${tool} at location ${p}`);
     }
-  }
-
-  if (tool === 'cabal' && os !== 'win32') {
-    const installedPath = await afs
-      .access(`${ghcupPath}/cabal-${version}`)
-      .then(() => ghcupPath)
-      .catch(() => undefined);
 
     if (installedPath) {
-      await exec(await ghcupBin(os), ['set', tool, version]);
-      return success(tool, version, installedPath, os);
+      // Make sure that the correct ghc is used, even if ghcup has set a
+      // default prior to this action being ran.
+      core.info(`isInstalled installedPath: ${installedPath}`);
+      if (installedPath === ghcupPath) {
+        // If the result of this `ghcup set` is non-zero, the version we want
+        // is probably not actually installed
+        const ghcupSetResult = await exec(await ghcupBin(os), [
+          'set',
+          tool,
+          version
+        ]);
+        if (ghcupSetResult == 0)
+          return success(tool, version, installedPath, os);
+      } else {
+        const cabalPath = await afs
+          .access(`${installedPath}/cabal-${version}`)
+          .then(() => p)
+          .catch(() => undefined);
+        core.info(`isInstalled cabalPath ${cabalPath}`);
+        if (cabalPath) {
+          return success(tool, version, installedPath, os);
+        }
+      }
     }
   }
 
@@ -170,7 +181,7 @@ export async function installTool(
       await apt(tool, version);
       break;
     case 'win32':
-      await choco(tool, version);
+      await ghcup(tool, version, os);
       break;
     case 'darwin':
       await ghcup(tool, version, os);
@@ -259,35 +270,11 @@ async function apt(tool: Tool, version: string): Promise<void> {
   );
 }
 
-async function choco(tool: Tool, version: string): Promise<void> {
-  core.info(`Attempting to install ${tool} ${version} using chocolatey`);
-
-  // E.g. GHC version 7.10.3 on Chocolatey is revision 7.10.3.1.
-  const revision: string = releaseRevision(version, tool, 'win32');
-
-  // Choco tries to invoke `add-path` command on earlier versions of ghc, which has been deprecated and fails the step, so disable command execution during this.
-  console.log('::stop-commands::SetupHaskellStopCommands');
-  const args = [
-    'choco',
-    'install',
-    tool,
-    '--version',
-    revision,
-    '-m',
-    '--no-progress',
-    core.isDebug() ? '-d' : '-r'
-  ];
-  if ((await exec('powershell', args)) !== 0)
-    await exec('powershell', [...args, '--pre']);
-  console.log('::SetupHaskellStopCommands::'); // Re-enable command execution
-  // Add GHC to path automatically because it does not add until the end of the step and we check the path.
-
-  const chocoPath = await getChocoPath(tool, version, revision);
-
-  if (tool == 'ghc') core.addPath(chocoPath);
-}
-
 async function ghcupBin(os: OS): Promise<string> {
+  core.info(`ghcupBin : ${os}`);
+  if (os === 'win32') {
+    return 'ghcup';
+  }
   const cachedBin = tc.find('ghcup', ghcup_version);
   if (cachedBin) return join(cachedBin, 'ghcup');
 
@@ -331,42 +318,3 @@ async function ghcupGHCHead(): Promise<void> {
   ]);
   if (returnCode === 0) await exec(bin, ['set', 'ghc', 'head']);
 }
-
-async function getChocoPath(
-  tool: Tool,
-  version: string,
-  revision: string
-): Promise<string> {
-  // Environment variable 'ChocolateyToolsLocation' will be added to Hosted images soon
-  // fallback to C:\\tools for now until variable is available
-  core.debug(
-    `getChocoPath(): ChocolateyToolsLocation = ${process.env.ChocolateyToolsLocation}`
-  );
-  const chocoToolsLocation =
-    process.env.ChocolateyToolsLocation ??
-    join(`${process.env.SystemDrive}`, 'tools');
-
-  // choco packages GHC 9.x are installed on different path (C:\\tools\ghc-9.0.1)
-  let chocoToolPath = join(chocoToolsLocation, `${tool}-${version}`);
-
-  // choco packages GHC < 9.x
-  if (!fs.existsSync(chocoToolPath)) {
-    chocoToolPath = join(
-      `${process.env.ChocolateyInstall}`,
-      'lib',
-      `${tool}.${revision}`
-    );
-  }
-  core.debug(`getChocoPath(): chocoToolPath = ${chocoToolPath}`);
-
-  const pattern = `${chocoToolPath}/**/${tool}.exe`;
-  const globber = await glob.create(pattern);
-
-  for await (const file of globber.globGenerator()) {
-    core.debug(`getChocoPath(): found ${tool} at ${file}`);
-    return dirname(file);
-  }
-
-  core.debug(`getChocoPath(): cannot find binary for ${tool}`);
-  return '<not-found>';
-}
diff --git a/setup/src/opts.ts b/setup/src/opts.ts
index 5be74ed4..568aa1b3 100644
--- a/setup/src/opts.ts
+++ b/setup/src/opts.ts
@@ -35,6 +35,34 @@ export type Defaults = Record<Tool, Version> & {
   general: {matcher: {enable: boolean}};
 };
 
+/**
+ * Reads the example `actions.yml` file and selects the `inputs` key. The result
+ * will be a key-value map of the following shape:
+ * ```
+ * {
+ *   'ghc-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'cabal-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'stack-version': {
+ *     required: false,
+ *     description: '...',
+ *     default: 'latest'
+ *   },
+ *   'enable-stack': {
+ *     required: false,
+ *     default: 'latest'
+ *   },
+ *   ...
+ * }
+ * ```
+ */
 export const yamlInputs: Record<string, {default: string}> = (
   load(
     readFileSync(join(__dirname, '..', 'action.yml'), 'utf8')
diff --git a/setup/src/setup-haskell.ts b/setup/src/setup-haskell.ts
index 4b183d94..99ed0f53 100644
--- a/setup/src/setup-haskell.ts
+++ b/setup/src/setup-haskell.ts
@@ -25,6 +25,9 @@ export default async function run(
     core.info('Preparing to setup a Haskell environment');
     const os = process.platform as OS;
     const opts = getOpts(getDefaults(os), os, inputs);
+    core.debug(`run: inputs = ${JSON.stringify(inputs)}`);
+    core.debug(`run: os     = ${JSON.stringify(os)}`);
+    core.debug(`run: opts   = ${JSON.stringify(opts)}`);
 
     if (opts.ghcup.releaseChannel) {
       await core.group(`Preparing ghcup environment`, async () =>