Consolidate and isolate bindist installation

In particular, this now ensure that we actually use the ghcup version we
installed as well as a separate installation directory, instead of any
potentially previously installed versions/files.

.github/workflows/bindists.yaml

@@ -14,6 +14,12 @@ on:
         required: true
         default: ghcup-0.0.7.yaml
         type: string
+env:
+  BOOTSTRAP_HASKELL_NONINTERACTIVE: 1
+  BOOTSTRAP_HASKELL_MINIMAL: 1
+  BOOTSTRAP_HASKELL_ADJUST_BASHRC: 1
+  GHC_VERSION: ${{ github.event.inputs.ghcVersion }}
+  METADATA_FILE: ${{ github.event.inputs.metadataFile }}
 jobs:
   bindist-install:
     name: linux-${{ matrix.image }}
@@ -42,10 +48,10 @@ jobs:
             toolRequirements: build-essential curl libffi-dev libffi7 libgmp-dev libgmp10 libncurses-dev libncurses5 libtinfo5
           - image: archlinux:latest
             installCmd: pacman -Syu --noconfirm
-            toolRequirements: gcc gmp libffi make ncurses perl tar xz
+            toolRequirements: which gcc gmp libffi make ncurses perl tar xz
           - image: fedora:latest
             installCmd: dnf install -y
-            toolRequirements: gcc g++ gmp gmp-devel make ncurses ncurses-compat-libs xz perl
+            toolRequirements: which gcc g++ gmp gmp-devel make ncurses ncurses-compat-libs xz perl
     container:
       image: ${{ matrix.image }}
     steps:
@@ -54,25 +60,8 @@ jobs:
         run: |
           ${{ matrix.installCmd }} curl bash git ${{ matrix.toolRequirements }}
       - uses: actions/checkout@v3
-      - name: Install ghcup
-        run: |
-          curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-          echo ~/.ghcup/bin >> $GITHUB_PATH
-        env:
-          BOOTSTRAP_HASKELL_NONINTERACTIVE: 1
-          BOOTSTRAP_HASKELL_MINIMAL: 1
-      - name: Print tool requirements
-        run: ghcup tool-requirements
-      - name: Install GHC ${{ github.event.inputs.ghcVersion }}
-        run: |
-          ghcup -v --url-source=file:${{ github.event.inputs.metadataFile }} \
-            install ghc --set ${{ github.event.inputs.ghcVersion }}
-      - name: GHC sanity check
-        run: |
-          ghc --version
-          echo 'main = print $ 1 + 1' > main.hs
-          ghc main.hs
-          [[ $(./main) -eq 2 ]]
+      - name: Install ghcup and bindist for GHC ${{ github.event.inputs.ghcVersion }}
+        run: .github/workflows/install-bindist.sh
   bindist-install-non-linux:
     name: ${{ matrix.os }}
     strategy:
@@ -85,22 +74,5 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
-      - name: Install ghcup
-        run: |
-          curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-          echo ~/.ghcup/bin >> $GITHUB_PATH
-        env:
-          BOOTSTRAP_HASKELL_NONINTERACTIVE: 1
-          BOOTSTRAP_HASKELL_MINIMAL: 1
-      - name: Print tool requirements
-        run: ghcup tool-requirements
-      - name: Install GHC ${{ github.event.inputs.ghcVersion }}
-        run: |
-          ghcup -v --url-source=file:${{ github.event.inputs.metadataFile }} \
-            install ghc --set ${{ github.event.inputs.ghcVersion }}
-      - name: GHC sanity check
-        run: |
-          ghc --version
-          echo 'main = print $ 1 + 1' > main.hs
-          ghc main.hs
-          [[ $(./main) -eq 2 ]]
+      - name: Install ghcup and bindist for GHC ${{ github.event.inputs.ghcVersion }}
+        run: .github/workflows/install-bindist.sh

.github/workflows/install-bindist.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+export GHCUP_INSTALL_BASE_PREFIX=$RUNNER_TEMP/foobarbaz
+
+curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
+
+source $GHCUP_INSTALL_BASE_PREFIX/.ghcup/env || source ~/.bashrc
+
+ghcup --version
+which ghcup | grep foobarbaz
+
+ghcup -v --url-source=file:$METADATA_FILE install ghc --set $GHC_VERSION
+
+ghc --version
+echo 'main = print $ 1 + 1' > main.hs
+ghc main.hs
+[[ $(./main) -eq 2 ]]