Prefer nix profile to nix-env

Author: purcell

.github/workflows/test.yml

@@ -37,10 +37,10 @@ jobs:
 
     - uses: actions/checkout@v4
     - name: Install stack and ghc
-      run: nix-env -iA stack ghc -f '<nixpkgs>'
+      run: nix profile install 'nixpkgs#stack' 'nixpkgs#ghc'
     - name: Install texinfo
       if: matrix.target == 'deploy-manual'
-      run: nix-env -iA texinfo -f '<nixpkgs>'
+      run: nix profile install 'nixpkgs#texinfo'
     - name: Run make
       run: make ${{ matrix.target || 'check' }}
       continue-on-error: ${{ matrix.emacs_version == 'snapshot' && (! matrix.target) }}