Improve unclear provider resolver error messages (#1003)

Signed-off-by: Christian Mesh <christianmesh1@gmail.com>

internal/command/e2etest/provider_dev_test.go

@@ -91,7 +91,7 @@ func TestProviderDevOverrides(t *testing.T) {
 	if got, want := stdout, `Provider development overrides are in effect`; !strings.Contains(got, want) {
 		t.Errorf("stdout doesn't include the warning about development overrides\nwant: %s\n%s", want, got)
 	}
-	if got, want := stderr, `Failed to query available provider packages`; !strings.Contains(got, want) {
+	if got, want := stderr, `Failed to resolve provider packages`; !strings.Contains(got, want) {
 		t.Errorf("stderr doesn't include the error about listing unavailable development provider\nwant: %s\n%s", want, got)
 	}
 }

internal/command/init.go

@@ -715,8 +715,8 @@ func (c *InitCommand) getProviders(ctx context.Context, config *configs.Config,
 			default:
 				diags = diags.Append(tfdiags.Sourceless(
 					tfdiags.Error,
-					"Failed to query available provider packages",
-					fmt.Sprintf("Could not retrieve the list of available versions for provider %s: %s",
+					"Failed to resolve provider packages",
+					fmt.Sprintf("Could not resolve provider %s: %s",
 						provider.ForDisplay(), err,
 					),
 				))

internal/command/init_test.go

@@ -2803,11 +2803,10 @@ func TestInit_testsWithProvider(t *testing.T) {
 
 	got := ui.ErrorWriter.String()
 	want := `
-Error: Failed to query available provider packages
+Error: Failed to resolve provider packages
 
-Could not retrieve the list of available versions for provider
-hashicorp/test: no available releases match the given constraints 1.0.1,
-1.0.2
+Could not resolve provider hashicorp/test: no available releases match the
+given constraints 1.0.1, 1.0.2
 
 `
 	if diff := cmp.Diff(got, want); len(diff) > 0 {

internal/providercache/installer.go

@@ -329,6 +329,8 @@ NeedProvider:
 			err = fmt.Errorf("the previously-selected version %s is no longer available", lock.Version())
 		} else {
 			err = fmt.Errorf("no available releases match the given constraints %s", getproviders.VersionConstraintsString(reqs[provider]))
+			log.Printf("[DEBUG] %s", err.Error())
+			log.Printf("[DEBUG] Available releases: %s", available)
 		}
 		errs[provider] = err
 		if cb := evts.QueryPackagesFailure; cb != nil {