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        "author": "Bryce Boe",
        "author_email": "bbzbryce@gmail.com",
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            "License :: OSI Approved :: BSD License",
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        "description": "# deterministic_zip\n\nA tool to generate consistent zip files.\n\nThis tool was specifically built to prevent zip file changes from triggering\nAWS Lambda function updates when running `terraform apply`. Before this change,\nevery re-build of the zipfile would result in a different zip even if its\ncontents had not changed.\n\n## Requirements\n\nThis tool currently only runs on python3.7 in order to use deflate compression\nlevel 9.\n\n## Installation\n\n```sh\npip install deterministic_zip\n```\n\n## Creating a deterministic_zip\n\nRun the following, and verify that your zip produces the same sha256 hash:\n\n```sh\necho \"The first file.\" > first\necho \"The second file.\" > second\ndeterministic_zip archive.zip first second\nsha256sum archive.zip\n```\n\nIf you have `\\n` line endings the result should be:\n\n    3afbd7c9b42bd5539ffd5c40499d3d1825157ed83791dce8d7ff2694189d28d6\n\nIf you have `\\r\\n` line endings (Windows) the result should be:\n\n    40e16270d62f15e7a192e88b1b301fa6540c86e7e897036b56be513341d376ed\n\n\n## How does it work?\n\nGreat question! There are three tricks to building a deterministic zip.\n\n1) Files must be added to the zip in the same order. Directory iteration order\n   may vary across machines, resulting in different zips. `deterministic_zip`\n   sorts all files before adding them to the zip archive.\n\n2) Files in the zip must have consistent timestamps. If I share a directory to\n   another machine, the timestamps of individual files may differ, depsite\n   identical content. To achieve timestamp consistency, `deterministic_zip`\n   sets the timestamp of all added files to `2019-01-01 00:00:00`. Please note\n   that this __does not__ affect the timestamp of the source files.\n\n3) Files in the zip must have consistent permissions. File permissions look\n   like `-rw-r--r--` for a file that is readable by all users, and only\n   writable by the user who owns the file. Similarly executable files might\n   have permissions that look like: `-rwxr-xr-x` or\n   `-rwx------`. `deterministic_zip` sets the permission of all files to either\n   `-r--r--r--`, or `-r-xr-xr-x`. The latter is only used of the user running\n   `deterministic_zip` has execute access on the file.\n\n",
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        "license": "Simplified BSD License",
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