}
        } catch (final IOException e) {
            throw new ThemeException("Failed to install " + artifact, e);
        }
    }

    /**
     * Uninstalls a theme by removing all its associated files and directories.
     *
     * @param artifact the theme artifact to uninstall
     */
    public void uninstall(final Artifact artifact) {
        final String themeName = getThemeName(artifact);

        switch (artifact.getType()) {
        case THEME:
            ComponentUtil.getThemeHelper().uninstall(artifact);
            uninstall(fileName, jarPath);
            break;
        default:
            uninstall(fileName, jarPath);
            break;
        }

    }

    /**
     * Uninstalls an artifact by deleting its JAR file.
     *
     * @param fileName the name of the file to delete

```gitignore
*
```

///

## Install Packages { #install-packages }

After activating the environment, you can install packages in it.

/// tip

Do this **once** when installing or upgrading the packages your project needs.

If you need to upgrade a version or add a new package you would **do this again**.

///

### Install Packages Directly { #install-packages-directly }

    'You can install "python-multipart" with: \n\n'
    "pip install python-multipart\n"
)
multipart_incorrect_install_error = (
    'Form data requires "python-multipart" to be installed. '
    'It seems you installed "multipart" instead. \n'
    'You can remove "multipart" with: \n\n'
    "pip uninstall multipart\n\n"
    'And then install "python-multipart" with: \n\n'

            mockThemeHelper.install(artifact);
            // Some environments may handle invalid zip gracefully
            assertTrue(true);
        } catch (Exception e) {
            // Should throw ThemeException or ZipException
            assertTrue(e instanceof ThemeException || e.getMessage().contains("zip") || e.getMessage().contains("install")
                    || e.getMessage().contains("format"));

        Start-Process -FilePath 'C:\tmp\pyinstall.exe' -ArgumentList $argumentList -Wait; \
        \
        Write-Host 'Verifying install...'; \
        Write-Host \"  python --version $version\"; & $installDir\python.exe --version; \
        \
        Write-Host 'Verifying pip install...'; \
        & $installDir\python.exe -m pip --version; \
        \

                assertFalse(exists, "plugin(" + target + ") is not included in " + installed);
                done = true;
                break;
            }
            assertTrue(done, "plugin(" + target + ") is uninstalled.");
        }
    }

    private Artifact getArtifactFromMap(final Map<String, Object> item) {
        return new Artifact((String) item.get("name"), (String) item.get("version"));
    }

	<property name="opensearch.version" value="3.5.0" />

	<target name="install.modules">
		<mkdir dir="${target.dir}" />
		<delete dir="${modules.dir}" />
		<mkdir dir="${modules.dir}" />

		<!-- analysis-common -->
		<antcall target="install.module">
			<param name="repo.url" value="${maven.release.repo.url}" />

---

## Install FastAPI { #install-fastapi }

The first step is to install FastAPI.

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and then **install FastAPI**:

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

/// note

	<property name="maven.release.repo.url" value="https://repo1.maven.org/maven2" />

	<target name="install.plugins">
		<mkdir dir="${target.dir}" />
		<delete dir="${plugins.dir}" />
		<mkdir dir="${plugins.dir}" />
		<!-- analysis-extension -->
		<antcall target="install.plugin">
			<param name="repo.url" value="${maven.release.repo.url}" />
			<param name="plugin.groupId" value="org/codelibs/opensearch" />