Rename environment variables to override cert and key store.

- This makes them more consistent with the other environment
    variables SEQUOIA_HOME and SEQUOIA_CRYPTO_POLICY.

  - Fixes #364.

NEWS

@@ -36,6 +36,10 @@
    - The arguments to name recipients for encryption now use the
      `--for` prefix, as in `sq encrypt --for-email alice@example.org`.
      Further, `--recipient-cert` is now just called `--for`
+   - The environment variables to override the default cert store and
+     key store location have been renamed from SQ_CERT_STORE to
+     SEQUOIA_CERT_STORE, and SQ_KEY_STORE to SEQUOIA_KEY_STORE,
+     respectively.
 * Changes in 0.38.0
 ** Notable changes
    - New subcommand `sq key subkey delete` to delete secret key

src/cli/examples.rs

@@ -199,8 +199,8 @@ macro_rules! test_examples {
                     cmd.current_dir(&tmp_dir)
                         .env("SEQUOIA_CRYPTO_POLICY", &policy)
                         .env("SEQUOIA_HOME", &home)
-                        .env("SQ_CERT_STORE", &cert_store)
-                        .env("SQ_KEY_STORE", &key_store)
+                        .env("SEQUOIA_CERT_STORE", &cert_store)
+                        .env("SEQUOIA_KEY_STORE", &key_store)
                         .arg("--batch")
                         .args(&command[1..]);
 

src/cli/mod.rs

@@ -281,7 +281,7 @@ key store."
     #[clap(
         long,
         value_name = "PATH",
-        env = "SQ_KEY_STORE",
+        env = "SEQUOIA_KEY_STORE",
         conflicts_with_all = &[ "no_key_store" ],
         global = true,
         help_heading = GLOBAL_OPTIONS_HEADER,
@@ -326,7 +326,7 @@ standard cert-d, which is located in `$HOME/.local/share/pgp.cert.d`."
     #[clap(
         long,
         value_name = "PATH",
-        env = "SQ_CERT_STORE",
+        env = "SEQUOIA_CERT_STORE",
         conflicts_with_all = &[ "no_cert_store" ],
         global = true,
         help_heading = GLOBAL_OPTIONS_HEADER,
@@ -335,7 +335,7 @@ standard cert-d, which is located in `$HOME/.local/share/pgp.cert.d`."
 Specify the location of the certificate store.  By default, `sq` uses \
 the OpenPGP certificate directory in Sequoia's home directory (see `--home`), \
 {}.  This can be overridden by setting the `PGP_CERT_D` environment \
-variable.  That in turn can be overridden by setting the `SQ_CERT_STORE` \
+variable.  That in turn can be overridden by setting the `SEQUOIA_CERT_STORE` \
 environment variable.",
             sequoia_directories::Home::default()
                 .map(|home| {