1OPAM-INSTALL(1) Opam Manual OPAM-INSTALL(1)
2
6 opam-install - Install a list of packages.
7
9 opam install [OPTION]... [PACKAGES]...
10
12 This command installs one or more packages inside the currently
13 selected switch (see opam switch). Once installed, you can remove
14 packages with opam remove, upgrade them with opam upgrade, and list
15 them with opam list. See opam pin as well to manage package versions,
16 reroute existing packages or add packages that are not defined in the
17 repositories.
18 All required dependencies of the selected packages will be installed
20 first. Any already installed packages having dependencies, or optional
21 dependencies to the changed packages will be recompiled. The proposed
22 solution may also imply removing incompatible or conflicting packages.
23 If paths are provided as argument instead of packages, they are assumed
25 to point to either project source directories containing one or more
26 package definitions (opam files), or directly to opam files. Then the
27 corresponding packages will be pinned to their local directory and
28 installed (unless --deps-only was specified).
29
31 PACKAGES
32 List of package names, with an optional version or constraint, e.g
33 `pkg', `pkg.1.0' or `pkg>=0.5' ; or files or directory names
34 containing package description, with explicit directory (e.g.
35 `./foo.opam' or `.')
36
38 --assume-built
39 For use on locally-pinned packages: assume they have already been
40 correctly built, and only run their installation instructions,
41 directly from their source directory. This skips the build
42 instructions and can be useful to install packages that are being
43 worked on. Implies --inplace-build. No locally-pinned packages will
44 be skipped.
45 --deps-only
47 Install all its dependencies, but don't actually install the
48 package.
49 --destdir=DIR
51 Copy the files installed by the given package within the current
52 opam switch below the prefix DIR, respecting their hierarchy, after
53 installation. Caution, calling this can overwrite, but never remove
54 files, even if they were installed by a previous use of --destdir,
55 e.g. on a previous version of the same package. See opam remove
56 --destdir to revert.
57 -j JOBS, --jobs=JOBS
59 Set the maximal number of concurrent jobs to use. The default value
60 is calculated from the number of cores. You can also set it using
61 the $OPAMJOBS environment variable.
62 --restore
64 Attempt to restore packages that were marked for installation but
65 have been removed due to errors
66 --set-root
68 Mark given packages as installed roots. This is the default for
69 newly manually-installed packages.
70 --unset-root
72 Mark given packages as "installed automatically".
73
75 -b, --keep-build-dir
76 Keep the build directories after compiling packages. This is
77 equivalent to setting $OPAMKEEPBUILDDIR to "true".
78 -d, --with-doc, --build-doc
80 Build the package documentation. This only affects packages listed
81 on the command-line. The --build-doc form is deprecated as this
82 does also installation. This is equivalent to setting $OPAMWITHDOC
83 (or the deprecated $OPAMBUILDDOC) to "true".
84 --dry-run
86 Simulate the command, but don't actually perform any changes. This
87 also can be set with environment variable $OPAMDEBUG.
88 --fake
90 This option registers the actions into the opam database, without
91 actually performing them. WARNING: This option is dangerous and
92 likely to break your opam environment. You probably want
93 `--dry-run'. You've been warned.
94 --ignore-constraints-on[=PACKAGES] (default=)
96 Forces opam to ignore version constraints on all dependencies to
97 the listed packages. This can be used to test compatibility, but
98 expect builds to break when using this. Note that version
99 constraints on optional dependencies and conflicts are unaffected.
100 This is equivalent to setting $OPAMIGNORECONSTRAINTS.
101 --inplace-build
103 When compiling a package which has its source bound to a local
104 directory, process the build and install actions directly in that
105 directory, rather than in a clean copy handled by opam. This only
106 affects packages that are explicitly listed on the command-line.
107 This is equivalent to setting $OPAMINPLACEBUILD to "true".
108 --locked[=SUFFIX] (default=locked)
110 In commands that use opam files found from pinned sources, if a
111 variant of the file with an added .SUFFIX extension is found (e.g.
112 foo.opam.locked besides foo.opam), that will be used instead. This
113 is typically useful to offer a more specific set of dependencies
114 and reproduce similar build contexts, hence the name. The opam lock
115 plugin can be used to generate such files, based on the versions of
116 the dependencies currently installed on the host. This is
117 equivalent to setting the $OPAMLOCKED environment variable. Note
118 that this option doesn't generally affect already pinned packages.
119 -m MAKE, --make=MAKE
121 Use MAKE as the default 'make' command. Deprecated: use opam config
122 set[-global] make MAKE instead. Has no effect if the make variable
123 is defined.
124 --no-checksums
126 Do not verify the checksum of downloaded archives.This is
127 equivalent to setting $OPAMNOCHECKSUMS to "true".
128 --require-checksums
130 Reject the installation of packages that don't provide a checksum
131 for the upstream archives. This is equivalent to setting
132 $OPAMREQUIRECHECKSUMS to "true".
133 --reuse-build-dir
135 Reuse existing build directories (kept by using --keep-build-dir),
136 instead of compiling from a fresh clone of the source. This can be
137 faster, but also lead to failures if the build systems of the
138 packages don't handle upgrades of dependencies well. This is
139 equivalent to setting $OPAMREUSEBUILDDIR to "true".
140 --show-actions
142 Call the solver and display the actions. Don't perform any changes.
143 This is equivalent to setting $OPAMSHOW.
144 --skip-updates
146 When running an install, upgrade or reinstall on source-pinned
147 packages, they are normally updated from their origin first. This
148 flag disables that behaviour and will keep them to their version in
149 cache. This is equivalent to setting $OPAMSKIPUPDATE.
150 -t, --with-test, --build-test
152 Build and run the package unit-tests. This only affects packages
153 listed on the command-line. The --build-test form is deprecated as
154 this also affects installation. This is equivalent to setting
155 $OPAMWITHTEST (or the deprecated $OPAMBUILDTEST) to "true".
156 --unlock-base
158 Allow changes to the packages set as switch base (typically, the
159 main compiler). Use with caution. This is equivalent to setting the
160 $OPAMUNLOCKBASE environment variable
161
163 These options are common to all commands.
164 --best-effort
166 Don't fail if all requested packages can't be installed: try to
167 install as many as possible. Note that not all external solvers may
168 support this option (recent versions of aspcud or mccs should).
169 This is equivalent to setting $OPAMBESTEFFORT environment variable.
170 --color=WHEN
172 Colorize the output. WHEN must be one of `always', `never' or
173 `auto'.
174 --criteria=CRITERIA
176 Specify user preferences for dependency solving for this run.
177 Overrides both $OPAMCRITERIA and $OPAMUPGRADECRITERIA. For details
178 on the supported language, and the external solvers available, see
179 http://opam.ocaml.org/doc/External_solvers.html. A general guide to
180 using solver preferences can be found at
181 http://www.dicosmo.org/Articles/usercriteria.pdf.
182 --cudf=FILENAME
184 Debug option: Save the CUDF requests sent to the solver to
185 FILENAME-<n>.cudf.
186 --debug
188 Print debug message to stderr. This is equivalent to setting
189 $OPAMDEBUG to "true".
190 --debug-level=LEVEL
192 Like --debug, but allows specifying the debug level (--debug sets
193 it to 1). Equivalent to setting $OPAMDEBUG to a positive integer.
194 --git-version
196 Print the git version of opam, if set (i.e. you are using a
197 development version), and exit.
198 --help[=FMT] (default=auto)
200 Show this help in format FMT. The value FMT must be one of `auto',
201 `pager', `groff' or `plain'. With `auto', the format is `pager` or
202 `plain' whenever the TERM env var is `dumb' or undefined.
203 --ignore-pin-depends
205 Ignore extra pins required by packages that get pinned, either
206 manually through opam pin or through opam install DIR. This is
207 equivalent to setting IGNOREPINDEPENDS=true.
208 --json=FILENAME
210 Save the results of the opam run in a computer-readable file. If
211 the filename contains the character `%', it will be replaced by an
212 index that doesn't overwrite an existing file. Similar to setting
213 the $OPAMJSON variable.
214 --no-aspcud
216 Deprecated.
217 --no-auto-upgrade
219 When configuring or updating a repository that is written for an
220 earlier opam version (1.2), opam internally converts it to the
221 current format. This disables this behaviour. Note that
222 repositories should define their format version in a 'repo' file at
223 their root, or they will be assumed to be in the older format. It
224 is, in any case, preferable to upgrade the repositories manually
225 using opam admin upgrade [--mirror URL] when possible.
226 --no-self-upgrade
228 Opam will replace itself with a newer binary found at OPAMROOT/opam
229 if present. This disables this behaviour.
230 -q, --quiet
232 Disables --verbose.
233 --root=ROOT
235 Use ROOT as the current root path. This is equivalent to setting
236 $OPAMROOT to ROOT.
237 --safe, --readonly
239 Make sure nothing will be automatically updated or rewritten.
240 Useful for calling from completion scripts, for example. Will fail
241 whenever such an operation is needed ; also avoids waiting for
242 locks, skips interactive questions and overrides the $OPAMDEBUG
243 variable. This is equivalent to set environment variable $OPAMSAFE.
244 --solver=CMD
246 Specify the CUDF solver to use for resolving package installation
247 problems. This is either a predefined solver (this version of opam
248 supports builtin-mccs+lp(), builtin-mccs+glpk, aspcud, mccs,
249 aspcud-old, packup), or a custom command that should contain the
250 variables %{input}%, %{output}%, %{criteria}%, and optionally
251 %{timeout}%. This is equivalent to setting $OPAMEXTERNALSOLVER.
252 --strict
254 Fail whenever an error is found in a package definition or a
255 configuration file. The default is to continue silently if
256 possible.
257 --switch=SWITCH
259 Use SWITCH as the current compiler switch. This is equivalent to
260 setting $OPAMSWITCH to SWITCH.
261 --use-internal-solver
263 Disable any external solver, and use the built-in one (this
264 requires that opam has been compiled with a built-in solver). This
265 is equivalent to setting $OPAMNOASPCUD or $OPAMUSEINTERNALSOLVER.
266 -v, --verbose
268 Be more verbose. One -v shows all package commands, repeat to also
269 display commands called internally (e.g. tar, curl, patch etc.)
270 Repeating n times is equivalent to setting $OPAMVERBOSE to "n".
271 --version
273 Show version information.
274 -w, --working-dir
276 Whenever updating packages that are bound to a local,
277 version-controlled directory, update to the current working state
278 of their source instead of the last committed state, or the ref
279 they are pointing to. This only affects packages explicitly listed
280 on the command-line.It can also be set with $OPAMWORKINGDIR.
281 -y, --yes
283 Answer yes to all yes/no questions without prompting. This is
284 equivalent to setting $OPAMYES to "true".
285
287 Opam makes use of the environment variables listed here. Boolean
288 variables should be set to "0", "no", "false" or the empty string to
289 disable, "1", "yes" or "true" to enable.
290 OPAMALLPARENS surround all filters with parenthesis
292 OPAMAUTOREMOVE see remove option `--auto-remove`
294 OPAMBESTEFFORT see option `--best-effort`
296 OPAMBESTEFFORTPREFIXCRITERIA sets the string that must be prepended to
298 the criteria when the `--best-effort` option is set, and is expected to
299 maximise the `opam-query` property in the solution
300 OPAMCOLOR, when set to always or never, sets a default value for the
302 --color option.
303 OPAMCRITERIA specifies user preferences for dependency solving. The
305 default value depends on the solver version, use `config report` to
306 know the current setting. See also option --criteria
307 OPAMCUDFFILE file save the cudf graph to file-actions-explicit.dot
309 OPAMCURL can be used to select a given 'curl' program. See OPAMFETCH
311 for more options.
312 OPAMDEBUG see options `--debug' and `--debug-level'.
314 OPAMDOWNLOADJOBS sets the maximum number of simultaneous downloads.
316 OPAMDRYRUN see option `--dry-run`
318 OPAMEDITOR sets the editor to use for opam file editing, overrides
320 $EDITOR and $VISUAL
321 OPAMERRLOGLEN sets the number of log lines printed when a sub-process
323 fails. 0 to print all.
324 OPAMEXTERNALSOLVER see option `--solver'.
326 OPAMFAKE see option `--fake`
328 OPAMFETCH specifies how to download files: either `wget', `curl' or a
330 custom command where variables %{url}%, %{out}%, %{retry}%,
331 %{compress}% and %{checksum}% will be replaced. Overrides the
332 'download-command' value from the main config file.
333 OPAMFIXUPCRITERIA same as OPAMUPGRADECRITERIA, but specific to fixup
335 OPAMIGNORECONSTRAINTS see install option `--ignore-constraints-on`
337 OPAMIGNOREPINDEPENDS see option `--ignore-pin-depends`
339 OPAMJOBS sets the maximum number of parallel workers to run.
341 OPAMJSON log json output to the given file (use character `%' to index
343 the files)
344 OPAMLOCKED see install option `--locked`
346 OPAMLOGS logdir sets log directory, default is a temporary directory in
348 /tmp
349 OPAMMAKECMD set the system make command to use
351 OPAMNOAUTOUPGRADE disables automatic internal upgrade of repositories
353 in an earlier format to the current one, on 'update' or 'init'.
354 OPAMKEEPLOGS tells opam to not remove some temporary command logs and
356 some backups. This skips some finalisers and may also help to get more
357 reliable backtraces
358 OPAMLOCKRETRIES sets the number of tries after which opam gives up
360 acquiring its lock and fails. <= 0 means infinite wait.
361 OPAMMERGEOUT merge process outputs, stderr on stdout
363 OPAMNO answer no to any question asked.
365 OPAMNOASPCUD Deprecated.
367 OPAMNOCHECKSUMS enables option --no-checksums when available.
369 OPAMNOSELFUPGRADE see option `--no-self-upgrade'.
371 OPAMPINKINDAUTO sets whether version control systems should be detected
373 when pinning to a local path. Enabled by default since 1.3.0.
374 OPAMPRECISETRACKING fine grain tracking of directories
376 OPAMREQUIRECHECKSUMS Enables option `--require-checksums' when
378 available (e.g. for `opam install`).
379 OPAMRETRES sets the number of tries before failing downloads.
381 OPAMROOT see option `--root'. This is automatically set by `opam env
383 --root=DIR --set-root'.
384 OPAMROOTISOK don't complain when running as root.
386 OPAMSAFE see option `--safe'
388 OPAMSHOW see option `--show`
390 OPAMSKIPUPDATE see option `--skip-updates`
392 OPAMSKIPVERSIONCHECKS bypasses some version checks. Unsafe, for
394 compatibility testing only.
395 OPAMSOLVERTIMEOUT change the time allowance of the solver. Default is
397 60.0, set to 0 for unlimited. Note that all solvers may not support
398 this option.
399 OPAMSTATUSLINE display a dynamic status line showing what's currently
401 going on on the terminal. (one of one of `always', `never' or `auto')
402 OPAMSTATS display stats at the end of command
404 OPAMSTRICT fail on inconsistencies (file reading, switch import, etc.)
406 OPAMSWITCH see option `--switch'. Automatically set by `opam env
408 --switch=SWITCH --set-switch'.
409 OPAMUNLOCKBASE see install option `--unlock-base`
411 OPAMUPGRADECRITERIA specifies user preferences for dependency solving
413 when performing an upgrade. Overrides OPAMCRITERIA in upgrades if both
414 are set. See also option --criteria
415 OPAMUSEINTERNALSOLVER see option `--use-internal-solver'.
417 OPAMUSEOPENSSL force openssl use for hash computing
419 OPAMUTF8 use UTF8 characters in output (one of one of `always', `never'
421 or `auto'). By default `auto', which is determined from the locale).
422 OPAMUTF8MSGS use extended UTF8 characters (camels) in opam messages.
424 Implies OPAMUTF8. This is set by default on OSX only.
425 OPAMVALIDATIONHOOK hook if set, uses the `%{hook%}` command to validate
427 an opam repository update
428 OPAMVAR_var overrides the contents of the variable var when
430 substituting `%{var}%` strings in `opam` files.
431 OPAMVAR_package_var overrides the contents of the variable package:var
433 when substituting `%{package:var}%` strings in `opam` files.
434 OPAMVERBOSE see option `--verbose'.
436 OPAMWORKINGDIR see option `--working-dir`
438 OPAMYES see option `--yes'.
440
442 As an exception to the following, the `exec' command returns 127 if the
443 command was not found or couldn't be executed, and the command's exit
444 value otherwise.
445 0 Success, or true for boolean queries.
447 1 False. Returned when a boolean return value is expected, e.g. when
449 running with --check, or for queries like opam lint.
450 2 Bad command-line arguments, or command-line arguments pointing to
452 an invalid context (e.g. file not following the expected format).
453 5 Not found. You requested something (package, version, repository,
455 etc.) that couldn't be found.
456 10 Aborted. The operation required confirmation, which wasn't given.
458 15 Could not acquire the locks required for the operation.
460 20 There is no solution to the user request. This can be caused by
462 asking to install two incompatible packages, for example.
463 30 Error in package definition, or other metadata files. Using
465 --strict raises this error more often.
466 31 Package script error. Some package operations were unsuccessful.
468 This may be an error in the packages or an incompatibility with
469 your system. This can be a partial error.
470 40 Sync error. Could not fetch some remotes from the network. This can
472 be a partial error.
473 50 Configuration error. Opam or system configuration doesn't allow
475 operation, and needs fixing.
476 60 Solver failure. The solver failed to return a sound answer. It can
478 be due to a broken external solver, or an error in solver
479 configuration.
480 99 Internal error. Something went wrong, likely due to a bug in opam
482 itself.
483 130 User interrupt. SIGINT was received, generally due to the user
485 pressing Ctrl-C.
486
488 See https://opam.ocaml.org/doc.
489
491 Vincent Bernardoff <vb@luminar.eu.org>
492 Raja Boujbel <raja.boujbel@ocamlpro.com>
493 Roberto Di Cosmo <roberto@dicosmo.org>
494 Thomas Gazagnaire <thomas@gazagnaire.org>
495 Louis Gesbert <louis.gesbert@ocamlpro.com>
496 Fabrice Le Fessant <Fabrice.Le_fessant@inria.fr>
497 Anil Madhavapeddy <anil@recoil.org>
498 Guillem Rieu <guillem.rieu@ocamlpro.com>
499 Ralf Treinen <ralf.treinen@pps.jussieu.fr>
500 Frederic Tuong <tuong@users.gforge.inria.fr>
501
503 Check bug reports at https://github.com/ocaml/opam/issues.
504Opam 2.0.6 OPAM-INSTALL(1)